115863990544 has 45 divisors (see below), whose sum is σ = 229944699543. Its totient is φ = 56556146976.

The previous prime is 115863990521. The next prime is 115863990547. The reversal of 115863990544 is 445099368511.

The square root of 115863990544 is 340388.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115863990547) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 58545747 + ... + 58547725.

Almost surely, 2^115863990544 is an apocalyptic number.

115863990544 is the 340388-th square number.

It is an amenable number.

115863990544 is a deficient number, since it is larger than the sum of its proper divisors (114080708999).

115863990544 is an frugal number, since it uses more digits than its factorization.

115863990544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052 (or 2024 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 115863990544 in words is "one hundred fifteen billion, eight hundred sixty-three million, nine hundred ninety thousand, five hundred forty-four".