115012215051 has 4 divisors (see below), whose sum is σ = 153349620072. Its totient is φ = 76674810032.

The previous prime is 115012215037. The next prime is 115012215053. The reversal of 115012215051 is 150512210511.

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 115012215051 - 2¹⁹ = 115011690763 is a prime.

It is a super-2 number, since 2×115012215051² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115012215053) 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, 19168702506 + ... + 19168702511.

It is an arithmetic number, because the mean of its divisors is an integer number (38337405018).

Almost surely, 2^115012215051 is an apocalyptic number.

115012215051 is a deficient number, since it is larger than the sum of its proper divisors (38337405021).

115012215051 is an equidigital number, since it uses as much as digits as its factorization.

115012215051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38337405020.

The product of its (nonzero) digits is 500, while the sum is 24.

Adding to 115012215051 its reverse (150512210511), we get a palindrome (265524425562).

The spelling of 115012215051 in words is "one hundred fifteen billion, twelve million, two hundred fifteen thousand, fifty-one".