51204213636604 has 24 divisors (see below), whose sum is σ = 102408698553728. Its totient is φ = 21944604855600.

The previous prime is 51204213636593. The next prime is 51204213636613. The reversal of 51204213636604 is 40663631240215.

It is a happy number.

It is a congruent number.

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, 9338407 + ... + 13770049.

Almost surely, 2^{51204213636604} is an apocalyptic number.

It is an amenable number.

51204213636604 is an abundant number, since it is smaller than the sum of its proper divisors (51204484917124).

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

51204213636604 is a wasteful number, since it uses less digits than its factorization.

51204213636604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4844305 (or 4844303 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

Adding to 51204213636604 its reverse (40663631240215), we get a palindrome (91867844876819).

The spelling of 51204213636604 in words is "fifty-one trillion, two hundred four billion, two hundred thirteen million, six hundred thirty-six thousand, six hundred four".