51206490093 has 24 divisors (see below), whose sum is σ = 75060748224. Its totient is φ = 31028314240.

The previous prime is 51206490079. The next prime is 51206490121. The reversal of 51206490093 is 39009460215.

It is not a de Polignac number, because 51206490093 - 2²⁸ = 50938054637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51206490193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2577205 + ... + 2596997.

It is an arithmetic number, because the mean of its divisors is an integer number (3127531176).

Almost surely, 2^51206490093 is an apocalyptic number.

It is an amenable number.

51206490093 is a deficient number, since it is larger than the sum of its proper divisors (23854258131).

51206490093 is a wasteful number, since it uses less digits than its factorization.

51206490093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26945 (or 26934 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 51206490093 in words is "fifty-one billion, two hundred six million, four hundred ninety thousand, ninety-three".