113642395409 has 2 divisors, whose sum is σ = 113642395410. Its totient is φ = 113642395408.

The previous prime is 113642395303. The next prime is 113642395417. The reversal of 113642395409 is 904593246311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92869515025 + 20772880384 = 304745^2 + 144128^2 .

It is a cyclic number.

It is not a de Polignac number, because 113642395409 - 2²⁸ = 113373959953 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (113642895409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56821197704 + 56821197705.

It is an arithmetic number, because the mean of its divisors is an integer number (56821197705).

Almost surely, 2^113642395409 is an apocalyptic number.

It is an amenable number.

113642395409 is a deficient number, since it is larger than the sum of its proper divisors (1).

113642395409 is an equidigital number, since it uses as much as digits as its factorization.

113642395409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 113642395409 in words is "one hundred thirteen billion, six hundred forty-two million, three hundred ninety-five thousand, four hundred nine".