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68497334264 = 23192324181299
BaseRepresentation
bin111111110010110000…
…100101111111111000
320112210200211010000002
4333302300211333320
52110240304144024
651244531332132
74643266506662
oct776260457770
9215720733002
1068497334264
112705aa61067
1211337751048
1365c8030c28
14345b21b532
151bad73b6ae
hexff2c25ff8

68497334264 has 64 divisors (see below), whose sum is σ = 141657120000. Its totient is φ = 30906247680.

The previous prime is 68497334263. The next prime is 68497334267. The reversal of 68497334264 is 46243379486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68497334263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801887 + ... + 883185.

It is an arithmetic number, because the mean of its divisors is an integer number (2213392500).

Almost surely, 268497334264 is an apocalyptic number.

It is an amenable number.

68497334264 is an abundant number, since it is smaller than the sum of its proper divisors (73159785736).

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

68497334264 is a wasteful number, since it uses less digits than its factorization.

68497334264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81588 (or 81584 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 56.

The spelling of 68497334264 in words is "sixty-eight billion, four hundred ninety-seven million, three hundred thirty-four thousand, two hundred sixty-four".

Divisors: 1 2 4 8 19 23 38 46 76 92 152 184 241 437 482 874 964 1748 1928 3496 4579 5543 9158 11086 18316 22172 36632 44344 81299 105317 162598 210634 325196 421268 650392 842536 1544681 1869877 3089362 3739754 6178724 7479508 12357448 14959016 19593059 35527663 39186118 71055326 78372236 142110652 156744472 284221304 372268121 450640357 744536242 901280714 1489072484 1802561428 2978144968 3605122856 8562166783 17124333566 34248667132 68497334264