12553831856 has 40 divisors (see below), whose sum is σ = 25095804480. Its totient is φ = 6080495616.

The previous prime is 12553831793. The next prime is 12553831877. The reversal of 12553831856 is 65813835521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12553831856.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26705 + ... + 160688.

It is an arithmetic number, because the mean of its divisors is an integer number (627395112).

Almost surely, 2^12553831856 is an apocalyptic number.

12553831856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12553831856 is a deficient number, since it is larger than the sum of its proper divisors (12541972624).

12553831856 is a wasteful number, since it uses less digits than its factorization.

12553831856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187533 (or 187527 counting only the distinct ones).

The product of its digits is 864000, while the sum is 47.

The spelling of 12553831856 in words is "twelve billion, five hundred fifty-three million, eight hundred thirty-one thousand, eight hundred fifty-six".