115520421992 has 16 divisors (see below), whose sum is σ = 217852821540. Its totient is φ = 57426336256.

The previous prime is 115520421977. The next prime is 115520422007. The reversal of 115520421992 is 299124025511.

It is an interprime number because it is at equal distance from previous prime (115520421977) and next prime (115520422007).

It can be written as a sum of positive squares in 2 ways, for example, as 87482259076 + 28038162916 = 295774^2 + 167446^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41732873 + ... + 41735640.

Almost surely, 2^115520421992 is an apocalyptic number.

It is an amenable number.

115520421992 is a deficient number, since it is larger than the sum of its proper divisors (102332399548).

115520421992 is a wasteful number, since it uses less digits than its factorization.

115520421992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83468692 (or 83468688 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The spelling of 115520421992 in words is "one hundred fifteen billion, five hundred twenty million, four hundred twenty-one thousand, nine hundred ninety-two".