51910012647 has 16 divisors (see below), whose sum is σ = 79384488960. Its totient is φ = 33490330200.

The previous prime is 51910012631. The next prime is 51910012667. The reversal of 51910012647 is 74621001915.

51910012647 is a `hidden beast` number, since 5 + 1 + 9 + 1 + 0 + 0 + 1 + 2 + 647 = 666.

It is not a de Polignac number, because 51910012647 - 2⁴ = 51910012631 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51910012667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31008729 + ... + 31010402.

It is an arithmetic number, because the mean of its divisors is an integer number (4961530560).

Almost surely, 2^51910012647 is an apocalyptic number.

51910012647 is a deficient number, since it is larger than the sum of its proper divisors (27474476313).

51910012647 is a wasteful number, since it uses less digits than its factorization.

51910012647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62019171 (or 62019165 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 51910012647 in words is "fifty-one billion, nine hundred ten million, twelve thousand, six hundred forty-seven".