51181238990924 has 24 divisors (see below), whose sum is σ = 102481090403328. Its totient is φ = 21909399762960.

The previous prime is 51181238990881. The next prime is 51181238990941. The reversal of 51181238990924 is 42909983218115.

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, 1059014882 + ... + 1059063209.

It is an arithmetic number, because the mean of its divisors is an integer number (4270045433472).

Almost surely, 2^{51181238990924} is an apocalyptic number.

It is an amenable number.

51181238990924 is an abundant number, since it is smaller than the sum of its proper divisors (51299851412404).

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

51181238990924 is a wasteful number, since it uses less digits than its factorization.

51181238990924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118078965 (or 2118078963 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 62.

The spelling of 51181238990924 in words is "fifty-one trillion, one hundred eighty-one billion, two hundred thirty-eight million, nine hundred ninety thousand, nine hundred twenty-four".