51982276464 has 60 divisors (see below), whose sum is σ = 145496166816. Its totient is φ = 17325282816.

The previous prime is 51982276459. The next prime is 51982276477. The reversal of 51982276464 is 46467228915.

51982276464 is a `hidden beast` number, since 5 + 1 + 98 + 22 + 76 + 464 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51982276464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1510392 + ... + 1544424.

Almost surely, 2^51982276464 is an apocalyptic number.

It is an amenable number.

51982276464 is an abundant number, since it is smaller than the sum of its proper divisors (93513890352).

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

51982276464 is a wasteful number, since it uses less digits than its factorization.

51982276464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44654 (or 44645 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 51982276464 in words is "fifty-one billion, nine hundred eighty-two million, two hundred seventy-six thousand, four hundred sixty-four".