51776317740672 has 144 divisors (see below), whose sum is σ = 173316931146450. Its totient is φ = 14793233624064.

The previous prime is 51776317740661. The next prime is 51776317740827. The reversal of 51776317740672 is 27604771367715.

51776317740672 is a `hidden beast` number, since 51 + 7 + 7 + 6 + 3 + 177 + 406 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27567792254016 + 24208525486656 = 5250504^2 + 4920216^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-3 number, since 3×51776317740672³ (a number of 42 digits) contains 333 as substring.

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 17 ways as a sum of consecutive naturals, for example, 458563147 + ... + 458676042.

Almost surely, 2^{51776317740672} is an apocalyptic number.

It is an amenable number.

51776317740672 is an abundant number, since it is smaller than the sum of its proper divisors (121540613405778).

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

51776317740672 is a wasteful number, since it uses less digits than its factorization.

51776317740672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917239223 (or 917239201 counting only the distinct ones).

The product of its (nonzero) digits is 72606240, while the sum is 63.

The spelling of 51776317740672 in words is "fifty-one trillion, seven hundred seventy-six billion, three hundred seventeen million, seven hundred forty thousand, six hundred seventy-two".