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71055039680 = 2651811226779
BaseRepresentation
bin100001000101100110…
…1011101110011000000
320210101221121000020022
41002023031131303000
52131010042232210
652350420033012
75063544605042
oct1021315356300
9223357530208
1071055039680
1128152798a99
1211930232768
136914bb5aa1
143620bada92
151cad065155
hex108b35dcc0

71055039680 has 56 divisors (see below), whose sum is σ = 170134757520. Its totient is φ = 28264965120.

The previous prime is 71055039641. The next prime is 71055039683. The reversal of 71055039680 is 8693055017.

It is not an unprimeable number, because it can be changed into a prime (71055039683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555470 + ... + 671309.

It is an arithmetic number, because the mean of its divisors is an integer number (3038120670).

Almost surely, 271055039680 is an apocalyptic number.

It is an amenable number.

71055039680 is an abundant number, since it is smaller than the sum of its proper divisors (99079717840).

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

71055039680 is a wasteful number, since it uses less digits than its factorization.

71055039680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226977 (or 1226967 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 71055039680 in words is "seventy-one billion, fifty-five million, thirty-nine thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 181 320 362 724 905 1448 1810 2896 3620 5792 7240 11584 14480 28960 57920 1226779 2453558 4907116 6133895 9814232 12267790 19628464 24535580 39256928 49071160 78513856 98142320 196284640 222046999 392569280 444093998 888187996 1110234995 1776375992 2220469990 3552751984 4440939980 7105503968 8881879960 14211007936 17763759920 35527519840 71055039680