51613294215 has 48 divisors (see below), whose sum is σ = 97015194720. Its totient is φ = 23361004800.

The previous prime is 51613294199. The next prime is 51613294231. The reversal of 51613294215 is 51249231615.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51613294199) and next prime (51613294231).

It is not a de Polignac number, because 51613294215 - 2⁴ = 51613294199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 273400 + ... + 421869.

It is an arithmetic number, because the mean of its divisors is an integer number (2021149890).

Almost surely, 2^51613294215 is an apocalyptic number.

51613294215 is a deficient number, since it is larger than the sum of its proper divisors (45401900505).

51613294215 is a wasteful number, since it uses less digits than its factorization.

51613294215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695392 (or 695385 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The spelling of 51613294215 in words is "fifty-one billion, six hundred thirteen million, two hundred ninety-four thousand, two hundred fifteen".