115030251621 has 6 divisors (see below), whose sum is σ = 166154807910. Its totient is φ = 76686834408.

The previous prime is 115030251617. The next prime is 115030251653. The reversal of 115030251621 is 126152030511.

115030251621 is a `hidden beast` number, since 1 + 1 + 5 + 0 + 30 + 2 + 5 + 1 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86106446721 + 28923804900 = 293439^2 + 170070^2 .

It is not a de Polignac number, because 115030251621 - 2² = 115030251617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115030253621) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 6390569526 + ... + 6390569543.

It is an arithmetic number, because the mean of its divisors is an integer number (27692467985).

Almost surely, 2^115030251621 is an apocalyptic number.

It is an amenable number.

115030251621 is a deficient number, since it is larger than the sum of its proper divisors (51124556289).

115030251621 is a wasteful number, since it uses less digits than its factorization.

115030251621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12781139075 (or 12781139072 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 115030251621 in words is "one hundred fifteen billion, thirty million, two hundred fifty-one thousand, six hundred twenty-one".