11918399453 has 8 divisors (see below), whose sum is σ = 12104609280. Its totient is φ = 11732434560.

The previous prime is 11918399447. The next prime is 11918399533. The reversal of 11918399453 is 35499381911.

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 11918399453 - 2²⁶ = 11851290589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11918399395 and 11918399404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11918399153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38093 + ... + 159021.

It is an arithmetic number, because the mean of its divisors is an integer number (1513076160).

Almost surely, 2^11918399453 is an apocalyptic number.

It is an amenable number.

11918399453 is a deficient number, since it is larger than the sum of its proper divisors (186209827).

11918399453 is a wasteful number, since it uses less digits than its factorization.

11918399453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122467.

The product of its digits is 1049760, while the sum is 53.

The spelling of 11918399453 in words is "eleven billion, nine hundred eighteen million, three hundred ninety-nine thousand, four hundred fifty-three".