51172663203 has 12 divisors (see below), whose sum is σ = 78264073368. Its totient is φ = 32108337600.

The previous prime is 51172663189. The next prime is 51172663301. The reversal of 51172663203 is 30236627115.

51172663203 is a `hidden beast` number, since 5 + 1 + 17 + 2 + 6 + 632 + 0 + 3 = 666.

It is not a de Polignac number, because 51172663203 - 2⁹ = 51172662691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51172663303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167230773 + ... + 167231078.

It is an arithmetic number, because the mean of its divisors is an integer number (6522006114).

Almost surely, 2^51172663203 is an apocalyptic number.

51172663203 is a deficient number, since it is larger than the sum of its proper divisors (27091410165).

51172663203 is a wasteful number, since it uses less digits than its factorization.

51172663203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334461874 (or 334461871 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 51172663203 in words is "fifty-one billion, one hundred seventy-two million, six hundred sixty-three thousand, two hundred three".