12055991577 has 8 divisors (see below), whose sum is σ = 18371034816. Its totient is φ = 6889138032.

The previous prime is 12055991527. The next prime is 12055991593. The reversal of 12055991577 is 77519955021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12055991577 - 2⁷ = 12055991449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12055991527) 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 7 ways as a sum of consecutive naturals, for example, 287047398 + ... + 287047439.

It is an arithmetic number, because the mean of its divisors is an integer number (2296379352).

Almost surely, 2^12055991577 is an apocalyptic number.

It is an amenable number.

12055991577 is a deficient number, since it is larger than the sum of its proper divisors (6315043239).

12055991577 is an equidigital number, since it uses as much as digits as its factorization.

12055991577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574094847.

The product of its (nonzero) digits is 992250, while the sum is 51.

The spelling of 12055991577 in words is "twelve billion, fifty-five million, nine hundred ninety-one thousand, five hundred seventy-seven".