11926784990 has 16 divisors (see below), whose sum is σ = 21469529952. Its totient is φ = 4770421344.

The previous prime is 11926784983. The next prime is 11926785029. The reversal of 11926784990 is 9948762911.

It is a congruent number.

It is an unprimeable number.

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, 220847 + ... + 269493.

It is an arithmetic number, because the mean of its divisors is an integer number (1341845622).

Almost surely, 2^11926784990 is an apocalyptic number.

11926784990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11926784990 is a deficient number, since it is larger than the sum of its proper divisors (9542744962).

11926784990 is a wasteful number, since it uses less digits than its factorization.

11926784990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73171.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The spelling of 11926784990 in words is "eleven billion, nine hundred twenty-six million, seven hundred eighty-four thousand, nine hundred ninety".