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86951532640 = 2557137566681
BaseRepresentation
bin101000011111010110…
…1110001100001100000
322022102210122112001211
41100332231301201200
52411034043021030
6103540041035504
76165511555420
oct1207655614140
9268383575054
1086951532640
113396a967485
1214a27a85b94
13827939b13b
1442cc0ba480
1523dd91212a
hex143eb71860

86951532640 has 96 divisors (see below), whose sum is σ = 236483198784. Its totient is φ = 29594296320.

The previous prime is 86951532631. The next prime is 86951532659. The reversal of 86951532640 is 4623515968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129901 + ... + 436780.

It is an arithmetic number, because the mean of its divisors is an integer number (2463366654).

Almost surely, 286951532640 is an apocalyptic number.

86951532640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86951532640 is an abundant number, since it is smaller than the sum of its proper divisors (149531666144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86951532640 is a wasteful number, since it uses less digits than its factorization.

86951532640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566840 (or 566832 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 86951532640 in words is "eighty-six billion, nine hundred fifty-one million, five hundred thirty-two thousand, six hundred forty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 137 140 160 224 274 280 548 560 685 959 1096 1120 1370 1918 2192 2740 3836 4384 4795 5480 7672 9590 10960 15344 19180 21920 30688 38360 76720 153440 566681 1133362 2266724 2833405 3966767 4533448 5666810 7933534 9066896 11333620 15867068 18133792 19833835 22667240 31734136 39667670 45334480 63468272 77635297 79335340 90668960 126936544 155270594 158670680 310541188 317341360 388176485 543447079 621082376 634682720 776352970 1086894158 1242164752 1552705940 2173788316 2484329504 2717235395 3105411880 4347576632 5434470790 6210823760 8695153264 10868941580 12421647520 17390306528 21737883160 43475766320 86951532640