51657121124016 has 40 divisors (see below), whose sum is σ = 137752323001344. Its totient is φ = 16663587458880.

The previous prime is 51657121123969. The next prime is 51657121124017. The reversal of 51657121124016 is 61042112175615.

It is not an unprimeable number, because it can be changed into a prime (51657121124017) 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, 17357902116 + ... + 17357905091.

Almost surely, 2^{51657121124016} is an apocalyptic number.

It is an amenable number.

51657121124016 is an abundant number, since it is smaller than the sum of its proper divisors (86095201877328).

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

51657121124016 is a wasteful number, since it uses less digits than its factorization.

51657121124016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34715807249 (or 34715807243 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 51657121124016 in words is "fifty-one trillion, six hundred fifty-seven billion, one hundred twenty-one million, one hundred twenty-four thousand, sixteen".