115666051655 has 16 divisors (see below), whose sum is σ = 173048431104. Its totient is φ = 72103512480.

The previous prime is 115666051639. The next prime is 115666051777. The reversal of 115666051655 is 556150666511.

It is not a de Polignac number, because 115666051655 - 2⁴ = 115666051639 is a prime.

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, 150215267 + ... + 150216036.

It is an arithmetic number, because the mean of its divisors is an integer number (10815526944).

Almost surely, 2^115666051655 is an apocalyptic number.

115666051655 is a deficient number, since it is larger than the sum of its proper divisors (57382379449).

115666051655 is a wasteful number, since it uses less digits than its factorization.

115666051655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300431326.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 115666051655 in words is "one hundred fifteen billion, six hundred sixty-six million, fifty-one thousand, six hundred fifty-five".