115566005010155 has 64 divisors (see below), whose sum is σ = 179842428057600. Its totient is φ = 69412866361344.

The previous prime is 115566005010067. The next prime is 115566005010173. The reversal of 115566005010155 is 551010500665511.

It is a cyclic number.

It is not a de Polignac number, because 115566005010155 - 2¹⁴ = 115566004993771 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 113611505 + ... + 114624194.

It is an arithmetic number, because the mean of its divisors is an integer number (2810037938400).

Almost surely, 2^{115566005010155} is an apocalyptic number.

115566005010155 is a deficient number, since it is larger than the sum of its proper divisors (64276423047445).

115566005010155 is a wasteful number, since it uses less digits than its factorization.

115566005010155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228235788.

The product of its (nonzero) digits is 112500, while the sum is 41.

Adding to 115566005010155 its reverse (551010500665511), we get a palindrome (666576505675666).

The spelling of 115566005010155 in words is "one hundred fifteen trillion, five hundred sixty-six billion, five million, ten thousand, one hundred fifty-five".