115981438776 has 64 divisors (see below), whose sum is σ = 332376833280. Its totient is φ = 33037424640.

The previous prime is 115981438757. The next prime is 115981438799. The reversal of 115981438776 is 677834189511.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987241 + ... + 1098456.

It is an arithmetic number, because the mean of its divisors is an integer number (5193388020).

Almost surely, 2^115981438776 is an apocalyptic number.

It is an amenable number.

115981438776 is an abundant number, since it is smaller than the sum of its proper divisors (216395394504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115981438776 is a wasteful number, since it uses less digits than its factorization.

115981438776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086044 (or 2086040 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 60.

The spelling of 115981438776 in words is "one hundred fifteen billion, nine hundred eighty-one million, four hundred thirty-eight thousand, seven hundred seventy-six".