51558802747766 has 16 divisors (see below), whose sum is σ = 78732601566480. Its totient is φ = 25315530897120.

The previous prime is 51558802747759. The next prime is 51558802747787. The reversal of 51558802747766 is 66774720885515.

It is a self number, because there is not a number n which added to its sum of digits gives 51558802747766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232056341 + ... + 232278416.

It is an arithmetic number, because the mean of its divisors is an integer number (4920787597905).

Almost surely, 2^{51558802747766} is an apocalyptic number.

51558802747766 is a deficient number, since it is larger than the sum of its proper divisors (27173798818714).

51558802747766 is a wasteful number, since it uses less digits than its factorization.

51558802747766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464335759.

The product of its (nonzero) digits is 790272000, while the sum is 71.

The spelling of 51558802747766 in words is "fifty-one trillion, five hundred fifty-eight billion, eight hundred two million, seven hundred forty-seven thousand, seven hundred sixty-six".