51172663204 has 12 divisors (see below), whose sum is σ = 96440788444. Its totient is φ = 23618152224.

The previous prime is 51172663189. The next prime is 51172663301. The reversal of 51172663204 is 40236627115.

It can be written as a sum of positive squares in 2 ways, for example, as 11511144100 + 39661519104 = 107290^2 + 199152^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492044787 + ... + 492044890.

Almost surely, 2^51172663204 is an apocalyptic number.

It is an amenable number.

51172663204 is a deficient number, since it is larger than the sum of its proper divisors (45268125240).

51172663204 is a wasteful number, since it uses less digits than its factorization.

51172663204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984089694 (or 984089692 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 51172663204 in words is "fifty-one billion, one hundred seventy-two million, six hundred sixty-three thousand, two hundred four".