115687736643 has 12 divisors (see below), whose sum is σ = 163857602840. Its totient is φ = 72588383232.

The previous prime is 115687736587. The next prime is 115687736701. The reversal of 115687736643 is 346637786511.

It is a happy number.

It is not a de Polignac number, because 115687736643 - 2¹² = 115687732547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115687736243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66716398 + ... + 66718131.

Almost surely, 2^115687736643 is an apocalyptic number.

115687736643 is a deficient number, since it is larger than the sum of its proper divisors (48169866197).

115687736643 is a wasteful number, since it uses less digits than its factorization.

115687736643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133434566 (or 133434549 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 57.

The spelling of 115687736643 in words is "one hundred fifteen billion, six hundred eighty-seven million, seven hundred thirty-six thousand, six hundred forty-three".