51607212400 has 30 divisors (see below), whose sum is σ = 123986328752. Its totient is φ = 20642884800.

The previous prime is 51607212379. The next prime is 51607212407. The reversal of 51607212400 is 421270615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51607212407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64508616 + ... + 64509415.

Almost surely, 2^51607212400 is an apocalyptic number.

51607212400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51607212400 is an abundant number, since it is smaller than the sum of its proper divisors (72379116352).

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

51607212400 is a wasteful number, since it uses less digits than its factorization.

51607212400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129018049 (or 129018038 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 51607212400 in words is "fifty-one billion, six hundred seven million, two hundred twelve thousand, four hundred".