51004974727 has 16 divisors (see below), whose sum is σ = 61726406400. Its totient is φ = 41142803328.

The previous prime is 51004974719. The next prime is 51004974733. The reversal of 51004974727 is 72747940015.

It is a cyclic number.

It is not a de Polignac number, because 51004974727 - 2³ = 51004974719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51004971727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1974348 + ... + 2000014.

It is an arithmetic number, because the mean of its divisors is an integer number (3857900400).

Almost surely, 2^51004974727 is an apocalyptic number.

51004974727 is a deficient number, since it is larger than the sum of its proper divisors (10721431673).

51004974727 is a wasteful number, since it uses less digits than its factorization.

51004974727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42390.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 51004974727 in words is "fifty-one billion, four million, nine hundred seventy-four thousand, seven hundred twenty-seven".