51504340544 has 28 divisors (see below), whose sum is σ = 102261666444. Its totient is φ = 25737621504.

The previous prime is 51504340529. The next prime is 51504340561. The reversal of 51504340544 is 44504340515.

It can be written as a sum of positive squares in 2 ways, for example, as 14517358144 + 36986982400 = 120488^2 + 192320^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112709 + ... + 340164.

It is an arithmetic number, because the mean of its divisors is an integer number (3652202373).

Almost surely, 2^51504340544 is an apocalyptic number.

It is an amenable number.

51504340544 is a deficient number, since it is larger than the sum of its proper divisors (50757325900).

51504340544 is a wasteful number, since it uses less digits than its factorization.

51504340544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454662 (or 454652 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 51504340544 in words is "fifty-one billion, five hundred four million, three hundred forty thousand, five hundred forty-four".