113105545305521 has 8 divisors (see below), whose sum is σ = 122018412916584. Its totient is φ = 104443744387840.

The previous prime is 113105545305517. The next prime is 113105545305541. The reversal of 113105545305521 is 125503545501311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43388055215521 + 69717490090000 = 6586961^2 + 8349700^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 113105545305521 - 2² = 113105545305517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113105545305541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62766672410 + ... + 62766674211.

It is an arithmetic number, because the mean of its divisors is an integer number (15252301614573).

Almost surely, 2^{113105545305521} is an apocalyptic number.

It is an amenable number.

113105545305521 is a deficient number, since it is larger than the sum of its proper divisors (8912867611063).

113105545305521 is a wasteful number, since it uses less digits than its factorization.

113105545305521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125533346691.

The product of its (nonzero) digits is 225000, while the sum is 41.

The spelling of 113105545305521 in words is "one hundred thirteen trillion, one hundred five billion, five hundred forty-five million, three hundred five thousand, five hundred twenty-one".