115515502251201 has 24 divisors (see below), whose sum is σ = 189148190824320. Its totient is φ = 67345070137056.

The previous prime is 115515502251181. The next prime is 115515502251241. The reversal of 115515502251201 is 102152205515511.

115515502251201 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 1 + 5 + 502 + 25 + 120 + 1 = 666.

It is not a de Polignac number, because 115515502251201 - 2⁵ = 115515502251169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115515502251241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25981892121 + ... + 25981896566.

It is an arithmetic number, because the mean of its divisors is an integer number (7881174617680).

Almost surely, 2^{115515502251201} is an apocalyptic number.

It is an amenable number.

115515502251201 is a deficient number, since it is larger than the sum of its proper divisors (73632688573119).

115515502251201 is a wasteful number, since it uses less digits than its factorization.

115515502251201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51963788725 (or 51963788722 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 36.

Adding to 115515502251201 its reverse (102152205515511), we get a palindrome (217667707766712).

The spelling of 115515502251201 in words is "one hundred fifteen trillion, five hundred fifteen billion, five hundred two million, two hundred fifty-one thousand, two hundred one".