51603630604 has 24 divisors (see below), whose sum is σ = 90631105488. Its totient is φ = 25709194560.

The previous prime is 51603630601. The next prime is 51603630607. The reversal of 51603630604 is 40603630615.

It is an interprime number because it is at equal distance from previous prime (51603630601) and next prime (51603630607).

It is a self number, because there is not a number n which added to its sum of digits gives 51603630604.

It is not an unprimeable number, because it can be changed into a prime (51603630601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262374 + ... + 1302610.

It is an arithmetic number, because the mean of its divisors is an integer number (3776296062).

Almost surely, 2^51603630604 is an apocalyptic number.

It is an amenable number.

51603630604 is a deficient number, since it is larger than the sum of its proper divisors (39027474884).

51603630604 is a wasteful number, since it uses less digits than its factorization.

51603630604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41385 (or 41383 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 51603630604 in words is "fifty-one billion, six hundred three million, six hundred thirty thousand, six hundred four".