51132113237 has 2 divisors, whose sum is σ = 51132113238. Its totient is φ = 51132113236.

The previous prime is 51132113189. The next prime is 51132113287. The reversal of 51132113237 is 73231123115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51130706641 + 1406596 = 226121^2 + 1186^2 .

It is a cyclic number.

It is not a de Polignac number, because 51132113237 - 2¹⁸ = 51131851093 is a prime.

It is a super-2 number, since 2×51132113237² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51132113287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25566056618 + 25566056619.

It is an arithmetic number, because the mean of its divisors is an integer number (25566056619).

Almost surely, 2^51132113237 is an apocalyptic number.

It is an amenable number.

51132113237 is a deficient number, since it is larger than the sum of its proper divisors (1).

51132113237 is an equidigital number, since it uses as much as digits as its factorization.

51132113237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The spelling of 51132113237 in words is "fifty-one billion, one hundred thirty-two million, one hundred thirteen thousand, two hundred thirty-seven".