51513040255 has 16 divisors (see below), whose sum is σ = 65339128800. Its totient is φ = 38879447040.

The previous prime is 51513040231. The next prime is 51513040289. The reversal of 51513040255 is 55204031515.

It is not a de Polignac number, because 51513040255 - 2³³ = 42923105663 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1102090 + ... + 1147879.

It is an arithmetic number, because the mean of its divisors is an integer number (4083695550).

Almost surely, 2^51513040255 is an apocalyptic number.

51513040255 is a deficient number, since it is larger than the sum of its proper divisors (13826088545).

51513040255 is a wasteful number, since it uses less digits than its factorization.

51513040255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250234.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 51513040255 in words is "fifty-one billion, five hundred thirteen million, forty thousand, two hundred fifty-five".