51599634157 has 2 divisors, whose sum is σ = 51599634158. Its totient is φ = 51599634156.

The previous prime is 51599634143. The next prime is 51599634187. The reversal of 51599634157 is 75143699515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33807809161 + 17791824996 = 183869^2 + 133386^2 .

It is a cyclic number.

It is not a de Polignac number, because 51599634157 - 2²³ = 51591245549 is a prime.

It is a super-2 number, since 2×51599634157² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51599634098 and 51599634107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51599634187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25799817078 + 25799817079.

It is an arithmetic number, because the mean of its divisors is an integer number (25799817079).

Almost surely, 2^51599634157 is an apocalyptic number.

It is an amenable number.

51599634157 is a deficient number, since it is larger than the sum of its proper divisors (1).

51599634157 is an equidigital number, since it uses as much as digits as its factorization.

51599634157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5103000, while the sum is 55.

The spelling of 51599634157 in words is "fifty-one billion, five hundred ninety-nine million, six hundred thirty-four thousand, one hundred fifty-seven".