51920869613328 has 120 divisors (see below), whose sum is σ = 159552040703328. Its totient is φ = 16288900250112.

The previous prime is 51920869613321. The next prime is 51920869613443. The reversal of 51920869613328 is 82331696802915.

51920869613328 is a `hidden beast` number, since 5 + 1 + 9 + 2 + 0 + 8 + 6 + 9 + 613 + 3 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (51920869613321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392702526 + ... + 392834717.

Almost surely, 2^{51920869613328} is an apocalyptic number.

It is an amenable number.

51920869613328 is an abundant number, since it is smaller than the sum of its proper divisors (107631171090000).

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

51920869613328 is a wasteful number, since it uses less digits than its factorization.

51920869613328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785537283 (or 785537265 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

The spelling of 51920869613328 in words is "fifty-one trillion, nine hundred twenty billion, eight hundred sixty-nine million, six hundred thirteen thousand, three hundred twenty-eight".