12355855864 has 32 divisors (see below), whose sum is σ = 25278739200. Its totient is φ = 5615098720.

The previous prime is 12355855859. The next prime is 12355855871. The reversal of 12355855864 is 46855855321.

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, 498927 + ... + 523105.

It is an arithmetic number, because the mean of its divisors is an integer number (789960600).

Almost surely, 2^12355855864 is an apocalyptic number.

It is an amenable number.

12355855864 is an abundant number, since it is smaller than the sum of its proper divisors (12922883336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12355855864 is a wasteful number, since it uses less digits than its factorization.

12355855864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30003 (or 29999 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 52.

The spelling of 12355855864 in words is "twelve billion, three hundred fifty-five million, eight hundred fifty-five thousand, eight hundred sixty-four".