555616565050561 has 32 divisors (see below), whose sum is σ = 659615342329856. Its totient is φ = 457976423520000.

The previous prime is 555616565050523. The next prime is 555616565050607. The reversal of 555616565050561 is 165050565616555.

It is not a de Polignac number, because 555616565050561 - 2¹⁷ = 555616564919489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 555616565050561.

It is not an unprimeable number, because it can be changed into a prime (555616565050361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12740236 + ... + 35686786.

It is an arithmetic number, because the mean of its divisors is an integer number (20612979447808).

Almost surely, 2^{555616565050561} is an apocalyptic number.

It is an amenable number.

555616565050561 is a deficient number, since it is larger than the sum of its proper divisors (103998777279295).

555616565050561 is a wasteful number, since it uses less digits than its factorization.

555616565050561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22947293.

The product of its (nonzero) digits is 101250000, while the sum is 61.

The spelling of 555616565050561 in words is "five hundred fifty-five trillion, six hundred sixteen billion, five hundred sixty-five million, fifty thousand, five hundred sixty-one".