5116055661561 has 16 divisors (see below), whose sum is σ = 7346544053184. Its totient is φ = 3148165011264.

The previous prime is 5116055661547. The next prime is 5116055661581. The reversal of 5116055661561 is 1651665506115.

It is not a de Polignac number, because 5116055661561 - 2⁹ = 5116055661049 is a prime.

It is a super-2 number, since 2×5116055661561² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5116055661561.

It is not an unprimeable number, because it can be changed into a prime (5116055661511) 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, 2981571 + ... + 4372856.

It is an arithmetic number, because the mean of its divisors is an integer number (459159003324).

Almost surely, 2^{5116055661561} is an apocalyptic number.

It is an amenable number.

5116055661561 is a deficient number, since it is larger than the sum of its proper divisors (2230488391623).

5116055661561 is a wasteful number, since it uses less digits than its factorization.

5116055661561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7372280.

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 5116055661561 in words is "five trillion, one hundred sixteen billion, fifty-five million, six hundred sixty-one thousand, five hundred sixty-one".