115501165501 has 2 divisors, whose sum is σ = 115501165502. Its totient is φ = 115501165500.

The previous prime is 115501165499. The next prime is 115501165567. The reversal of 115501165501 is 105561105511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114193981476 + 1307184025 = 337926^2 + 36155^2 .

It is a cyclic number.

It is not a de Polignac number, because 115501165501 - 2¹ = 115501165499 is a prime.

Together with 115501165499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115501165001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57750582750 + 57750582751.

It is an arithmetic number, because the mean of its divisors is an integer number (57750582751).

Almost surely, 2^115501165501 is an apocalyptic number.

It is an amenable number.

115501165501 is a deficient number, since it is larger than the sum of its proper divisors (1).

115501165501 is an equidigital number, since it uses as much as digits as its factorization.

115501165501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3750, while the sum is 31.

The spelling of 115501165501 in words is "one hundred fifteen billion, five hundred one million, one hundred sixty-five thousand, five hundred one".