11564426438 has 8 divisors (see below), whose sum is σ = 17347262400. Its totient is φ = 5782005640.

The previous prime is 11564426431. The next prime is 11564426453. The reversal of 11564426438 is 83462446511.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11564426431) 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, 20918 + ... + 153513.

It is an arithmetic number, because the mean of its divisors is an integer number (2168407800).

Almost surely, 2^11564426438 is an apocalyptic number.

11564426438 is a deficient number, since it is larger than the sum of its proper divisors (5782835962).

11564426438 is a wasteful number, since it uses less digits than its factorization.

11564426438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207582.

The product of its digits is 552960, while the sum is 44.

The spelling of 11564426438 in words is "eleven billion, five hundred sixty-four million, four hundred twenty-six thousand, four hundred thirty-eight".