556377801840 has 120 divisors (see below), whose sum is σ = 2135431011168. Its totient is φ = 127172067840.

The previous prime is 556377801817. The next prime is 556377801841. The reversal of 556377801840 is 48108773655.

It is a happy number.

556377801840 is a `hidden beast` number, since 5 + 563 + 7 + 78 + 0 + 1 + 8 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556377801841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55191171 + ... + 55201250.

Almost surely, 2^556377801840 is an apocalyptic number.

It is an amenable number.

556377801840 is an abundant number, since it is smaller than the sum of its proper divisors (1579053209328).

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

556377801840 is a wasteful number, since it uses less digits than its factorization.

556377801840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110392447 (or 110392438 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 556377801840 in words is "five hundred fifty-six billion, three hundred seventy-seven million, eight hundred one thousand, eight hundred forty".