11978789594 has 16 divisors (see below), whose sum is σ = 19384104168. Its totient is φ = 5530716672.

The previous prime is 11978789519. The next prime is 11978789623. The reversal of 11978789594 is 49598787911.

It can be written as a sum of positive squares in 4 ways, for example, as 11862041569 + 116748025 = 108913^2 + 10805^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3321947 + ... + 3325550.

Almost surely, 2^11978789594 is an apocalyptic number.

11978789594 is a deficient number, since it is larger than the sum of its proper divisors (7405314574).

11978789594 is a wasteful number, since it uses less digits than its factorization.

11978789594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6647569.

The product of its digits is 45722880, while the sum is 68.

The spelling of 11978789594 in words is "eleven billion, nine hundred seventy-eight million, seven hundred eighty-nine thousand, five hundred ninety-four".