51163252137 has 12 divisors (see below), whose sum is σ = 74837950720. Its totient is φ = 33677076888.

The previous prime is 51163252099. The next prime is 51163252141. The reversal of 51163252137 is 73125236115.

51163252137 is a `hidden beast` number, since 5 + 1 + 1 + 632 + 5 + 2 + 13 + 7 = 666.

51163252137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51163252137 - 2¹² = 51163248041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51163252177) 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, 35979073 + ... + 35980494.

Almost surely, 2^51163252137 is an apocalyptic number.

It is an amenable number.

51163252137 is a deficient number, since it is larger than the sum of its proper divisors (23674698583).

51163252137 is a wasteful number, since it uses less digits than its factorization.

51163252137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71959652 (or 71959649 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The spelling of 51163252137 in words is "fifty-one billion, one hundred sixty-three million, two hundred fifty-two thousand, one hundred thirty-seven".