11885564990 has 16 divisors (see below), whose sum is σ = 23039710848. Its totient is φ = 4388516256.

The previous prime is 11885564981. The next prime is 11885565017. The reversal of 11885564990 is 9946558811.

It is a congruent number.

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, 45713582 + ... + 45713841.

It is an arithmetic number, because the mean of its divisors is an integer number (1439981928).

Almost surely, 2^11885564990 is an apocalyptic number.

11885564990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11885564990 is a deficient number, since it is larger than the sum of its proper divisors (11154145858).

11885564990 is a wasteful number, since it uses less digits than its factorization.

11885564990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91427443.

The product of its (nonzero) digits is 3110400, while the sum is 56.

The spelling of 11885564990 in words is "eleven billion, eight hundred eighty-five million, five hundred sixty-four thousand, nine hundred ninety".