51689201600 has 84 divisors (see below), whose sum is σ = 131290698048. Its totient is φ = 20008704000.

The previous prime is 51689201587. The next prime is 51689201623. The reversal of 51689201600 is 610298615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471461 + ... + 570660.

Almost surely, 2^51689201600 is an apocalyptic number.

51689201600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51689201600 is an abundant number, since it is smaller than the sum of its proper divisors (79601496448).

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

51689201600 is a wasteful number, since it uses less digits than its factorization.

51689201600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042174 (or 1042159 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 51689201600 in words is "fifty-one billion, six hundred eighty-nine million, two hundred one thousand, six hundred".