115251115015 has 4 divisors (see below), whose sum is σ = 138301338024. Its totient is φ = 92200892008.

The previous prime is 115251115009. The next prime is 115251115019. The reversal of 115251115015 is 510511152511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115251115015 - 2¹⁷ = 115250983943 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 (115251115019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11525111497 + ... + 11525111506.

It is an arithmetic number, because the mean of its divisors is an integer number (34575334506).

Almost surely, 2^115251115015 is an apocalyptic number.

115251115015 is a deficient number, since it is larger than the sum of its proper divisors (23050223009).

115251115015 is an equidigital number, since it uses as much as digits as its factorization.

115251115015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23050223008.

The product of its (nonzero) digits is 1250, while the sum is 28.

Adding to 115251115015 its reverse (510511152511), we get a palindrome (625762267526).

The spelling of 115251115015 in words is "one hundred fifteen billion, two hundred fifty-one million, one hundred fifteen thousand, fifteen".