51277312377 has 12 divisors (see below), whose sum is σ = 74139786084. Its totient is φ = 34151387040.

The previous prime is 51277312369. The next prime is 51277312403. The reversal of 51277312377 is 77321377215.

51277312377 is a `hidden beast` number, since 5 + 1 + 277 + 3 + 1 + 2 + 377 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12235899456 + 39041412921 = 110616^2 + 197589^2 .

It is not a de Polignac number, because 51277312377 - 2³ = 51277312369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51277311377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2780958 + ... + 2799335.

It is an arithmetic number, because the mean of its divisors is an integer number (6178315507).

Almost surely, 2^51277312377 is an apocalyptic number.

It is an amenable number.

51277312377 is a deficient number, since it is larger than the sum of its proper divisors (22862473707).

51277312377 is a wasteful number, since it uses less digits than its factorization.

51277312377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581320 (or 5581317 counting only the distinct ones).

The product of its digits is 432180, while the sum is 45.

The spelling of 51277312377 in words is "fifty-one billion, two hundred seventy-seven million, three hundred twelve thousand, three hundred seventy-seven".