115015638221 has 8 divisors (see below), whose sum is σ = 125545476000. Its totient is φ = 104498112240.

The previous prime is 115015638131. The next prime is 115015638251. The reversal of 115015638221 is 122836510511.

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 115015638221 - 2¹⁰ = 115015637197 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 (115015638251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3058406 + ... + 3095783.

It is an arithmetic number, because the mean of its divisors is an integer number (15693184500).

Almost surely, 2^115015638221 is an apocalyptic number.

115015638221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115015638221 is a deficient number, since it is larger than the sum of its proper divisors (10529837779).

115015638221 is a wasteful number, since it uses less digits than its factorization.

115015638221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155899.

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 115015638221 in words is "one hundred fifteen billion, fifteen million, six hundred thirty-eight thousand, two hundred twenty-one".