115156171605 has 16 divisors (see below), whose sum is σ = 184295476800. Its totient is φ = 61401424128.

The previous prime is 115156171591. The next prime is 115156171639. The reversal of 115156171605 is 506171651511.

It is not a de Polignac number, because 115156171605 - 2⁷ = 115156171477 is a prime.

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, 887287 + ... + 1008756.

It is an arithmetic number, because the mean of its divisors is an integer number (11518467300).

Almost surely, 2^115156171605 is an apocalyptic number.

115156171605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115156171605 is a deficient number, since it is larger than the sum of its proper divisors (69139305195).

115156171605 is a wasteful number, since it uses less digits than its factorization.

115156171605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900100.

The product of its (nonzero) digits is 31500, while the sum is 39.

The spelling of 115156171605 in words is "one hundred fifteen billion, one hundred fifty-six million, one hundred seventy-one thousand, six hundred five".