51232478860 has 24 divisors (see below), whose sum is σ = 108310280400. Its totient is φ = 20355453504.

The previous prime is 51232478851. The next prime is 51232478881. The reversal of 51232478860 is 6887423215.

It is a self number, because there is not a number n which added to its sum of digits gives 51232478860.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8593074 + ... + 8599033.

It is an arithmetic number, because the mean of its divisors is an integer number (4512928350).

Almost surely, 2^51232478860 is an apocalyptic number.

It is an amenable number.

51232478860 is an abundant number, since it is smaller than the sum of its proper divisors (57077801540).

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

51232478860 is a wasteful number, since it uses less digits than its factorization.

51232478860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17192265 (or 17192263 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 51232478860 in words is "fifty-one billion, two hundred thirty-two million, four hundred seventy-eight thousand, eight hundred sixty".