115520040505 has 4 divisors (see below), whose sum is σ = 138624048612. Its totient is φ = 92416032400.

The previous prime is 115520040479. The next prime is 115520040521. The reversal of 115520040505 is 505040025511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14706170361 + 100813870144 = 121269^2 + 317512^2 .

It is a de Polignac number, because none of the positive numbers 2^k-115520040505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11552004046 + ... + 11552004055.

It is an arithmetic number, because the mean of its divisors is an integer number (34656012153).

Almost surely, 2^115520040505 is an apocalyptic number.

It is an amenable number.

115520040505 is a deficient number, since it is larger than the sum of its proper divisors (23104008107).

115520040505 is an equidigital number, since it uses as much as digits as its factorization.

115520040505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23104008106.

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 115520040505 in words is "one hundred fifteen billion, five hundred twenty million, forty thousand, five hundred five".