115666006655 has 16 divisors (see below), whose sum is σ = 146325049344. Its totient is φ = 87642596640.

The previous prime is 115666006609. The next prime is 115666006657. The reversal of 115666006655 is 556600666511.

It is not a de Polignac number, because 115666006655 - 2⁶ = 115666006591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115666006657) 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, 7931357 + ... + 7945926.

It is an arithmetic number, because the mean of its divisors is an integer number (9145315584).

Almost surely, 2^115666006655 is an apocalyptic number.

115666006655 is a deficient number, since it is larger than the sum of its proper divisors (30659042689).

115666006655 is a wasteful number, since it uses less digits than its factorization.

115666006655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15877366.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 115666006655 in words is "one hundred fifteen billion, six hundred sixty-six million, six thousand, six hundred fifty-five".