115464137561 has 4 divisors (see below), whose sum is σ = 115732036224. Its totient is φ = 115196238900.

The previous prime is 115464137533. The next prime is 115464137597. The reversal of 115464137561 is 165731464511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 165731464511 = 3727 ⋅44467793.

It is a cyclic number.

It is not a de Polignac number, because 115464137561 - 2⁶ = 115464137497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115464134561) 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, 133948685 + ... + 133949546.

It is an arithmetic number, because the mean of its divisors is an integer number (28933009056).

Almost surely, 2^115464137561 is an apocalyptic number.

It is an amenable number.

115464137561 is a deficient number, since it is larger than the sum of its proper divisors (267898663).

115464137561 is an equidigital number, since it uses as much as digits as its factorization.

115464137561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267898662.

The product of its digits is 302400, while the sum is 44.

The spelling of 115464137561 in words is "one hundred fifteen billion, four hundred sixty-four million, one hundred thirty-seven thousand, five hundred sixty-one".