51551852007879 has 12 divisors (see below), whose sum is σ = 76195502193096. Its totient is φ = 33568647818832.

The previous prime is 51551852007829. The next prime is 51551852007919. The reversal of 51551852007879 is 97870025815515.

51551852007879 is a `hidden beast` number, since 5 + 1 + 551 + 8 + 5 + 2 + 0 + 0 + 7 + 8 + 79 = 666.

It is not a de Polignac number, because 51551852007879 - 2⁹ = 51551852007367 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51551852007829) 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, 66604459572 + ... + 66604460345.

It is an arithmetic number, because the mean of its divisors is an integer number (6349625182758).

Almost surely, 2^{51551852007879} is an apocalyptic number.

51551852007879 is a deficient number, since it is larger than the sum of its proper divisors (24643650185217).

51551852007879 is a wasteful number, since it uses less digits than its factorization.

51551852007879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133208919966 (or 133208919963 counting only the distinct ones).

The product of its (nonzero) digits is 35280000, while the sum is 63.

The spelling of 51551852007879 in words is "fifty-one trillion, five hundred fifty-one billion, eight hundred fifty-two million, seven thousand, eight hundred seventy-nine".