111418396409 has 4 divisors (see below), whose sum is σ = 111424530804. Its totient is φ = 111412262016.

The previous prime is 111418396391. The next prime is 111418396417. The reversal of 111418396409 is 904693814111.

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 41178555625 + 70239840784 = 202925^2 + 265028^2 .

It is a cyclic number.

It is not a de Polignac number, because 111418396409 - 2¹⁶ = 111418330873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111418395409) 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, 3039872 + ... + 3076305.

It is an arithmetic number, because the mean of its divisors is an integer number (27856132701).

Almost surely, 2^111418396409 is an apocalyptic number.

It is an amenable number.

111418396409 is a deficient number, since it is larger than the sum of its proper divisors (6134395).

111418396409 is an equidigital number, since it uses as much as digits as its factorization.

111418396409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134394.

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 111418396409 in words is "one hundred eleven billion, four hundred eighteen million, three hundred ninety-six thousand, four hundred nine".