51599634403 has 2 divisors, whose sum is σ = 51599634404. Its totient is φ = 51599634402.

The previous prime is 51599634377. The next prime is 51599634433. The reversal of 51599634403 is 30443699515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51599634403 - 2²⁹ = 51062763491 is a prime.

It is a super-2 number, since 2×51599634403² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51599634433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25799817201 + 25799817202.

It is an arithmetic number, because the mean of its divisors is an integer number (25799817202).

Almost surely, 2^51599634403 is an apocalyptic number.

51599634403 is a deficient number, since it is larger than the sum of its proper divisors (1).

51599634403 is an equidigital number, since it uses as much as digits as its factorization.

51599634403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 51599634403 in words is "fifty-one billion, five hundred ninety-nine million, six hundred thirty-four thousand, four hundred three".