51761162511 has 16 divisors (see below), whose sum is σ = 76708476000. Its totient is φ = 34496069184.

The previous prime is 51761162507. The next prime is 51761162591. The reversal of 51761162511 is 11526116715.

51761162511 is a `hidden beast` number, since 5 + 1 + 7 + 6 + 11 + 625 + 11 = 666.

It is not a de Polignac number, because 51761162511 - 2² = 51761162507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51761162591) 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, 232056 + ... + 396701.

It is an arithmetic number, because the mean of its divisors is an integer number (4794279750).

Almost surely, 2^51761162511 is an apocalyptic number.

51761162511 is a deficient number, since it is larger than the sum of its proper divisors (24947313489).

51761162511 is a wasteful number, since it uses less digits than its factorization.

51761162511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631815 (or 631809 counting only the distinct ones).

The product of its digits is 12600, while the sum is 36.

The spelling of 51761162511 in words is "fifty-one billion, seven hundred sixty-one million, one hundred sixty-two thousand, five hundred eleven".