115997776991 has 8 divisors (see below), whose sum is σ = 116644516560. Its totient is φ = 115351622848.

The previous prime is 115997776967. The next prime is 115997777029. The reversal of 115997776991 is 199677799511.

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

It is a cyclic number.

It is not a de Polignac number, because 115997776991 - 2¹⁰ = 115997775967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115997775991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254075 + ... + 544563.

It is an arithmetic number, because the mean of its divisors is an integer number (14580564570).

Almost surely, 2^115997776991 is an apocalyptic number.

115997776991 is a deficient number, since it is larger than the sum of its proper divisors (646739569).

115997776991 is a wasteful number, since it uses less digits than its factorization.

115997776991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292713.

The product of its digits is 67512690, while the sum is 71.

The spelling of 115997776991 in words is "one hundred fifteen billion, nine hundred ninety-seven million, seven hundred seventy-six thousand, nine hundred ninety-one".