51603630615 has 24 divisors (see below), whose sum is σ = 89645540400. Its totient is φ = 27460629504.

The previous prime is 51603630607. The next prime is 51603630623.

51603630615 is a `hidden beast` number, since 5 + 1 + 6 + 0 + 3 + 6 + 30 + 615 = 666.

51603630615 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (51603630607) and next prime (51603630623).

It is not a de Polignac number, because 51603630615 - 2³ = 51603630607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51603630615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1256797 + ... + 1297206.

It is an arithmetic number, because the mean of its divisors is an integer number (3735230850).

Almost surely, 2^51603630615 is an apocalyptic number.

51603630615 is a deficient number, since it is larger than the sum of its proper divisors (38041909785).

51603630615 is a wasteful number, since it uses less digits than its factorization.

51603630615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554463 (or 2554460 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 51603630615 in words is "fifty-one billion, six hundred three million, six hundred thirty thousand, six hundred fifteen".