51161711156700 has 72 divisors (see below), whose sum is σ = 148074422057520. Its totient is φ = 13638833779200.

The previous prime is 51161711156681. The next prime is 51161711156737. The reversal of 51161711156700 is 765111716115.

It is a happy number.

51161711156700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 25851585 + ... + 27760184.

Almost surely, 2^{51161711156700} is an apocalyptic number.

51161711156700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51161711156700 is an abundant number, since it is smaller than the sum of its proper divisors (96912710900820).

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

51161711156700 is a wasteful number, since it uses less digits than its factorization.

51161711156700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53614967 (or 53614960 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 42.

The spelling of 51161711156700 in words is "fifty-one trillion, one hundred sixty-one billion, seven hundred eleven million, one hundred fifty-six thousand, seven hundred".