51007761477 has 16 divisors (see below), whose sum is σ = 75570932160. Its totient is φ = 34003429200.

The previous prime is 51007761451. The next prime is 51007761479. The reversal of 51007761477 is 77416770015.

51007761477 is a `hidden beast` number, since 5 + 100 + 7 + 76 + 1 + 477 = 666.

It is not a de Polignac number, because 51007761477 - 2²⁶ = 50940652613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51007761479) 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, 694327 + ... + 764267.

It is an arithmetic number, because the mean of its divisors is an integer number (4723183260).

Almost surely, 2^51007761477 is an apocalyptic number.

It is an amenable number.

51007761477 is a deficient number, since it is larger than the sum of its proper divisors (24563170683).

51007761477 is a wasteful number, since it uses less digits than its factorization.

51007761477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96961 (or 96955 counting only the distinct ones).

The product of its (nonzero) digits is 288120, while the sum is 45.

The spelling of 51007761477 in words is "fifty-one billion, seven million, seven hundred sixty-one thousand, four hundred seventy-seven".