115687736642 has 8 divisors (see below), whose sum is σ = 179515453500. Its totient is φ = 55849252144.

The previous prime is 115687736587. The next prime is 115687736701. The reversal of 115687736642 is 246637786511.

It is a happy number.

It is a Cunningham number, because it is equal to 340129²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 115687736641 + 1 = 340129^2 + 1^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997308017 + ... + 997308132.

Almost surely, 2^115687736642 is an apocalyptic number.

115687736642 is a deficient number, since it is larger than the sum of its proper divisors (63827716858).

115687736642 is a wasteful number, since it uses less digits than its factorization.

115687736642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994616180.

The product of its digits is 10160640, while the sum is 56.

The spelling of 115687736642 in words is "one hundred fifteen billion, six hundred eighty-seven million, seven hundred thirty-six thousand, six hundred forty-two".