115845262521 has 4 divisors (see below), whose sum is σ = 154460350032. Its totient is φ = 77230175012.

The previous prime is 115845262513. The next prime is 115845262541. The reversal of 115845262521 is 125262548511.

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 115845262521 - 2³ = 115845262513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115845262541) 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, 19307543751 + ... + 19307543756.

It is an arithmetic number, because the mean of its divisors is an integer number (38615087508).

Almost surely, 2^115845262521 is an apocalyptic number.

It is an amenable number.

115845262521 is a deficient number, since it is larger than the sum of its proper divisors (38615087511).

115845262521 is an equidigital number, since it uses as much as digits as its factorization.

115845262521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38615087510.

The product of its digits is 192000, while the sum is 42.

The spelling of 115845262521 in words is "one hundred fifteen billion, eight hundred forty-five million, two hundred sixty-two thousand, five hundred twenty-one".