115220888187 has 16 divisors (see below), whose sum is σ = 161857618560. Its totient is φ = 72706246272.

The previous prime is 115220888171. The next prime is 115220888201. The reversal of 115220888187 is 781888022511.

It is not a de Polignac number, because 115220888187 - 2⁴ = 115220888171 is a prime.

It is a super-2 number, since 2×115220888187² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115220888147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835998 + ... + 964019.

It is an arithmetic number, because the mean of its divisors is an integer number (10116101160).

Almost surely, 2^115220888187 is an apocalyptic number.

115220888187 is a deficient number, since it is larger than the sum of its proper divisors (46636730373).

115220888187 is a wasteful number, since it uses less digits than its factorization.

115220888187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801162.

The product of its (nonzero) digits is 573440, while the sum is 51.

The spelling of 115220888187 in words is "one hundred fifteen billion, two hundred twenty million, eight hundred eighty-eight thousand, one hundred eighty-seven".