51630065400 has 48 divisors (see below), whose sum is σ = 160053204600. Its totient is φ = 13768017280.

The previous prime is 51630065371. The next prime is 51630065437. The reversal of 51630065400 is 456003615.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 43024455 + ... + 43025654.

Almost surely, 2^51630065400 is an apocalyptic number.

51630065400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51630065400 is an abundant number, since it is smaller than the sum of its proper divisors (108423139200).

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

51630065400 is a wasteful number, since it uses less digits than its factorization.

51630065400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86050128 (or 86050119 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 51630065400 in words is "fifty-one billion, six hundred thirty million, sixty-five thousand, four hundred".