51513200015 has 16 divisors (see below), whose sum is σ = 63210944160. Its totient is φ = 40288210560.

The previous prime is 51513200003. The next prime is 51513200099. The reversal of 51513200015 is 51000231515.

It is a happy number.

It is not a de Polignac number, because 51513200015 - 2¹⁸ = 51512937871 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428984 + ... + 535773.

It is an arithmetic number, because the mean of its divisors is an integer number (3950684010).

Almost surely, 2^51513200015 is an apocalyptic number.

51513200015 is a deficient number, since it is larger than the sum of its proper divisors (11697744145).

51513200015 is a wasteful number, since it uses less digits than its factorization.

51513200015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965002.

The product of its (nonzero) digits is 750, while the sum is 23.

The spelling of 51513200015 in words is "fifty-one billion, five hundred thirteen million, two hundred thousand, fifteen".