51647934277 has 16 divisors (see below), whose sum is σ = 55839992112. Its totient is φ = 47593820160.

The previous prime is 51647934269. The next prime is 51647934287. The reversal of 51647934277 is 77243974615.

51647934277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2669375556 + 48978558721 = 51666^2 + 221311^2 .

It is not a de Polignac number, because 51647934277 - 2³ = 51647934269 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 (51647934287) 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, 18127 + ... + 321907.

It is an arithmetic number, because the mean of its divisors is an integer number (3489999507).

Almost surely, 2^51647934277 is an apocalyptic number.

It is an amenable number.

51647934277 is a deficient number, since it is larger than the sum of its proper divisors (4192057835).

51647934277 is a wasteful number, since it uses less digits than its factorization.

51647934277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304008.

The product of its digits is 8890560, while the sum is 55.

The spelling of 51647934277 in words is "fifty-one billion, six hundred forty-seven million, nine hundred thirty-four thousand, two hundred seventy-seven".