12055991633 has 12 divisors (see below), whose sum is σ = 13908340992. Its totient is φ = 10237062360.

The previous prime is 12055991599. The next prime is 12055991653. The reversal of 12055991633 is 33619955021.

It is a de Polignac number, because none of the positive numbers 2^k-12055991633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12055991653) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4928 + ... + 155358.

It is an arithmetic number, because the mean of its divisors is an integer number (1159028416).

Almost surely, 2^12055991633 is an apocalyptic number.

It is an amenable number.

12055991633 is a deficient number, since it is larger than the sum of its proper divisors (1852349359).

12055991633 is an equidigital number, since it uses as much as digits as its factorization.

12055991633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150652 (or 150545 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 44.

The spelling of 12055991633 in words is "twelve billion, fifty-five million, nine hundred ninety-one thousand, six hundred thirty-three".