115610661566 has 8 divisors (see below), whose sum is σ = 173467814760. Its totient is φ = 57788056648.

The previous prime is 115610661563. The next prime is 115610661613. The reversal of 115610661566 is 665166016511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115610661563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8628701 + ... + 8642088.

It is an arithmetic number, because the mean of its divisors is an integer number (21683476845).

Almost surely, 2^115610661566 is an apocalyptic number.

115610661566 is a deficient number, since it is larger than the sum of its proper divisors (57857153194).

115610661566 is a wasteful number, since it uses less digits than its factorization.

115610661566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17274138.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 115610661566 in words is "one hundred fifteen billion, six hundred ten million, six hundred sixty-one thousand, five hundred sixty-six".