555555556656 has 100 divisors (see below), whose sum is σ = 1613744837232. Its totient is φ = 184516527744.

The previous prime is 555555556613. The next prime is 555555556657. The reversal of 555555556656 is 656655555555.

It is a junction number, because it is equal to n+sod(n) for n = 555555556593 and 555555556602.

It is not an unprimeable number, because it can be changed into a prime (555555556657) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 414780 + ... + 1132763.

Almost surely, 2^555555556656 is an apocalyptic number.

It is an amenable number.

555555556656 is an abundant number, since it is smaller than the sum of its proper divisors (1058189280576).

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

555555556656 is a wasteful number, since it uses less digits than its factorization.

555555556656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547840 (or 1547825 counting only the distinct ones).

The product of its digits is 421875000, while the sum is 63.

The spelling of 555555556656 in words is "five hundred fifty-five billion, five hundred fifty-five million, five hundred fifty-six thousand, six hundred fifty-six".