5111661655615 has 16 divisors (see below), whose sum is σ = 6232797194400. Its totient is φ = 4023981222912.

The previous prime is 5111661655571. The next prime is 5111661655619. The reversal of 5111661655615 is 5165561661115.

It is a cyclic number.

It is not a de Polignac number, because 5111661655615 - 2³¹ = 5109514171967 is a prime.

It is a super-2 number, since 2×5111661655615² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111661655619) 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, 32465310 + ... + 32622379.

It is an arithmetic number, because the mean of its divisors is an integer number (389549824650).

Almost surely, 2^{5111661655615} is an apocalyptic number.

5111661655615 is a deficient number, since it is larger than the sum of its proper divisors (1121135538785).

5111661655615 is a wasteful number, since it uses less digits than its factorization.

5111661655615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65087946.

The product of its digits is 810000, while the sum is 49.

The spelling of 5111661655615 in words is "five trillion, one hundred eleven billion, six hundred sixty-one million, six hundred fifty-five thousand, six hundred fifteen".