51243754764 has 24 divisors (see below), whose sum is σ = 120510251008. Its totient is φ = 16946753040.

The previous prime is 51243754763. The next prime is 51243754769. The reversal of 51243754764 is 46745734215.

It is not an unprimeable number, because it can be changed into a prime (51243754763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16810732 + ... + 16813779.

Almost surely, 2^51243754764 is an apocalyptic number.

It is an amenable number.

51243754764 is an abundant number, since it is smaller than the sum of its proper divisors (69266496244).

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

51243754764 is a wasteful number, since it uses less digits than its factorization.

51243754764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33624645 (or 33624643 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 48.

The spelling of 51243754764 in words is "fifty-one billion, two hundred forty-three million, seven hundred fifty-four thousand, seven hundred sixty-four".