556649895872 has 112 divisors (see below), whose sum is σ = 1289600704512. Its totient is φ = 233448084480.

The previous prime is 556649895871. The next prime is 556649895877. The reversal of 556649895872 is 278598946655.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 556649895872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556649895871) 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 15 ways as a sum of consecutive naturals, for example, 9063347 + ... + 9124557.

Almost surely, 2^556649895872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556649895872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644800352256).

556649895872 is an abundant number, since it is smaller than the sum of its proper divisors (732950808640).

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

556649895872 is a wasteful number, since it uses less digits than its factorization.

556649895872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61666 (or 61656 counting only the distinct ones).

The product of its digits is 1306368000, while the sum is 74.

The spelling of 556649895872 in words is "five hundred fifty-six billion, six hundred forty-nine million, eight hundred ninety-five thousand, eight hundred seventy-two".