11842921856 has 64 divisors (see below), whose sum is σ = 23764926960. Its totient is φ = 5878579200.

The previous prime is 11842921813. The next prime is 11842921889. The reversal of 11842921856 is 65812924811.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 11842921856.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17138471 + ... + 17139161.

Almost surely, 2^11842921856 is an apocalyptic number.

11842921856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11842921856 is an abundant number, since it is smaller than the sum of its proper divisors (11922005104).

11842921856 is an equidigital number, since it uses as much as digits as its factorization.

11842921856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1471 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The spelling of 11842921856 in words is "eleven billion, eight hundred forty-two million, nine hundred twenty-one thousand, eight hundred fifty-six".