115571904845 has 8 divisors (see below), whose sum is σ = 139958637720. Its totient is φ = 91609289280.

The previous prime is 115571904757. The next prime is 115571904869. The reversal of 115571904845 is 548409175511.

It can be written as a sum of positive squares in 4 ways, for example, as 13122618916 + 102449285929 = 114554^2 + 320077^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115571904845 - 2¹² = 115571900749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115571904793 and 115571904802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106028726 + ... + 106029815.

It is an arithmetic number, because the mean of its divisors is an integer number (17494829715).

Almost surely, 2^115571904845 is an apocalyptic number.

It is an amenable number.

115571904845 is a deficient number, since it is larger than the sum of its proper divisors (24386732875).

115571904845 is a wasteful number, since it uses less digits than its factorization.

115571904845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212058655.

The product of its (nonzero) digits is 1008000, while the sum is 50.

The spelling of 115571904845 in words is "one hundred fifteen billion, five hundred seventy-one million, nine hundred four thousand, eight hundred forty-five".