51772774330368 has 2496 divisors, whose sum is σ = 200932626800640. Its totient is φ = 13042778112000.

The previous prime is 51772774330357. The next prime is 51772774330373. The reversal of 51772774330368 is 86303347727715.

51772774330368 is a `hidden beast` number, since 5 + 1 + 7 + 72 + 77 + 433 + 0 + 3 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (2496).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 329762893746 + ... + 329762893902.

Almost surely, 2^{51772774330368} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51772774330368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100466313400320).

51772774330368 is an abundant number, since it is smaller than the sum of its proper divisors (149159852470272).

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

51772774330368 is a wasteful number, since it uses less digits than its factorization.

51772774330368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 124467840, while the sum is 63.

The spelling of 51772774330368 in words is "fifty-one trillion, seven hundred seventy-two billion, seven hundred seventy-four million, three hundred thirty thousand, three hundred sixty-eight".