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68107132404 = 22321999571831
BaseRepresentation
bin111111011011100000…
…000101110111110100
320111210111120210200100
4333123200011313310
52103440411214104
651142112114100
74630521034143
oct773340056764
9214714523610
1068107132404
112697a778693
1211248b35930
13656524035c
14342148775a
151b89361139
hexfdb805df4

68107132404 has 36 divisors (see below), whose sum is σ = 181220734240. Its totient is φ = 21507515280.

The previous prime is 68107132397. The next prime is 68107132447. The reversal of 68107132404 is 40423170186.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49785232 + ... + 49786599.

Almost surely, 268107132404 is an apocalyptic number.

It is an amenable number.

68107132404 is an abundant number, since it is smaller than the sum of its proper divisors (113113601836).

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

68107132404 is a wasteful number, since it uses less digits than its factorization.

68107132404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99571860 (or 99571855 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 68107132404 in words is "sixty-eight billion, one hundred seven million, one hundred thirty-two thousand, four hundred four".

Divisors: 1 2 3 4 6 9 12 18 19 36 38 57 76 114 171 228 342 684 99571831 199143662 298715493 398287324 597430986 896146479 1194861972 1792292958 1891864789 3584585916 3783729578 5675594367 7567459156 11351188734 17026783101 22702377468 34053566202 68107132404