51530331205 has 16 divisors (see below), whose sum is σ = 65100340800. Its totient is φ = 39048929280.

The previous prime is 51530331187. The next prime is 51530331221. The reversal of 51530331205 is 50213303515.

It is not a de Polignac number, because 51530331205 - 2²³ = 51521942597 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, 694386 + ... + 765004.

It is an arithmetic number, because the mean of its divisors is an integer number (4068771300).

Almost surely, 2^51530331205 is an apocalyptic number.

It is an amenable number.

51530331205 is a deficient number, since it is larger than the sum of its proper divisors (13570009595).

51530331205 is a wasteful number, since it uses less digits than its factorization.

51530331205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78324.

The product of its (nonzero) digits is 6750, while the sum is 28.

The spelling of 51530331205 in words is "fifty-one billion, five hundred thirty million, three hundred thirty-one thousand, two hundred five".