556144457680 has 80 divisors (see below), whose sum is σ = 1478204924544. Its totient is φ = 190620080640.

The previous prime is 556144457657. The next prime is 556144457681. The reversal of 556144457680 is 86754441655.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556144457681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1711450 + ... + 2010310.

Almost surely, 2^556144457680 is an apocalyptic number.

It is an amenable number.

556144457680 is an abundant number, since it is smaller than the sum of its proper divisors (922060466864).

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

556144457680 is a wasteful number, since it uses less digits than its factorization.

556144457680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302204 (or 302198 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 55.

The spelling of 556144457680 in words is "five hundred fifty-six billion, one hundred forty-four million, four hundred fifty-seven thousand, six hundred eighty".