51523638908 has 48 divisors (see below), whose sum is σ = 107049191424. Its totient is φ = 21233085120.

The previous prime is 51523638889. The next prime is 51523638931. The reversal of 51523638908 is 80983632515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52766 + ... + 325317.

It is an arithmetic number, because the mean of its divisors is an integer number (2230191488).

Almost surely, 2^51523638908 is an apocalyptic number.

It is an amenable number.

51523638908 is an abundant number, since it is smaller than the sum of its proper divisors (55525552516).

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

51523638908 is a wasteful number, since it uses less digits than its factorization.

51523638908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378282 (or 378280 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 51523638908 in words is "fifty-one billion, five hundred twenty-three million, six hundred thirty-eight thousand, nine hundred eight".