115694144638 has 8 divisors (see below), whose sum is σ = 178231520232. Its totient is φ = 56283637896.

The previous prime is 115694144609. The next prime is 115694144647. The reversal of 115694144638 is 836441496511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 781717120 + ... + 781717267.

It is an arithmetic number, because the mean of its divisors is an integer number (22278940029).

Almost surely, 2^115694144638 is an apocalyptic number.

115694144638 is a deficient number, since it is larger than the sum of its proper divisors (62537375594).

115694144638 is a wasteful number, since it uses less digits than its factorization.

115694144638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563434426.

The product of its digits is 2488320, while the sum is 52.

The spelling of 115694144638 in words is "one hundred fifteen billion, six hundred ninety-four million, one hundred forty-four thousand, six hundred thirty-eight".