115511050256501 has 4 divisors (see below), whose sum is σ = 115815828753600. Its totient is φ = 115206271759404.

The previous prime is 115511050256477. The next prime is 115511050256599. The reversal of 115511050256501 is 105652050115511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115511050256501 - 2¹⁸ = 115511049994357 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 (115511055256501) 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, 152389247981 + ... + 152389248738.

It is an arithmetic number, because the mean of its divisors is an integer number (28953957188400).

Almost surely, 2^{115511050256501} is an apocalyptic number.

It is an amenable number.

115511050256501 is a deficient number, since it is larger than the sum of its proper divisors (304778497099).

115511050256501 is an equidigital number, since it uses as much as digits as its factorization.

115511050256501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304778497098.

The product of its (nonzero) digits is 37500, while the sum is 38.

The spelling of 115511050256501 in words is "one hundred fifteen trillion, five hundred eleven billion, fifty million, two hundred fifty-six thousand, five hundred one".