117561958615 has 16 divisors (see below), whose sum is σ = 147228668928. Its totient is φ = 89947835296.

The previous prime is 117561958607. The next prime is 117561958649. The reversal of 117561958615 is 516859165711.

It is a cyclic number.

It is not a de Polignac number, because 117561958615 - 2³ = 117561958607 is a prime.

It is a super-2 number, since 2×117561958615² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797202 + ... + 933088.

It is an arithmetic number, because the mean of its divisors is an integer number (9201791808).

Almost surely, 2^117561958615 is an apocalyptic number.

117561958615 is a deficient number, since it is larger than the sum of its proper divisors (29666710313).

117561958615 is a wasteful number, since it uses less digits than its factorization.

117561958615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143438.

The product of its digits is 2268000, while the sum is 55.

The spelling of 117561958615 in words is "one hundred seventeen billion, five hundred sixty-one million, nine hundred fifty-eight thousand, six hundred fifteen".