655555555556 has 48 divisors (see below), whose sum is σ = 1253596272768. Its totient is φ = 297484723200.

The previous prime is 655555555553. The next prime is 655555555573.

655555555556 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (655555555553) 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, 83602196 + ... + 83610036.

It is an arithmetic number, because the mean of its divisors is an integer number (26116589016).

Almost surely, 2^655555555556 is an apocalyptic number.

It is an amenable number.

655555555556 is a deficient number, since it is larger than the sum of its proper divisors (598040717212).

655555555556 is a wasteful number, since it uses less digits than its factorization.

655555555556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10772 (or 10770 counting only the distinct ones).

The product of its digits is 351562500, while the sum is 62.

The spelling of 655555555556 in words is "six hundred fifty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-six".