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51162106156 = 2271827218077
BaseRepresentation
bin101111101001011111…
…111100100100101100
311220001120112021120121
4233221133330210230
51314234444344111
635300433254324
73460562504230
oct575137744454
9156046467517
1051162106156
111a774747667
129aba1043a4
134a947571c5
142694bd85c0
1514e68e7871
hexbe97fc92c

51162106156 has 12 divisors (see below), whose sum is σ = 102324212368. Its totient is φ = 21926616912.

The previous prime is 51162106147. The next prime is 51162106157. The reversal of 51162106156 is 65160126115.

51162106156 is an admirable number.

It is a super-2 number, since 2×511621061562 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51162106157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913609011 + ... + 913609066.

Almost surely, 251162106156 is an apocalyptic number.

It is an amenable number.

51162106156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51162106156 is a wasteful number, since it uses less digits than its factorization.

51162106156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827218088 (or 1827218086 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 51162106156 in words is "fifty-one billion, one hundred sixty-two million, one hundred six thousand, one hundred fifty-six".

Divisors: 1 2 4 7 14 28 1827218077 3654436154 7308872308 12790526539 25581053078 51162106156