655944449556 has 48 divisors (see below), whose sum is σ = 1673550885888. Its totient is φ = 198309842400.

The previous prime is 655944449543. The next prime is 655944449593.

655944449556 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5707930 + ... + 5821713.

It is an arithmetic number, because the mean of its divisors is an integer number (34865643456).

Almost surely, 2^655944449556 is an apocalyptic number.

655944449556 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

655944449556 is an abundant number, since it is smaller than the sum of its proper divisors (1017606436332).

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

655944449556 is a wasteful number, since it uses less digits than its factorization.

655944449556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11530092 (or 11530090 counting only the distinct ones).

The product of its digits is 466560000, while the sum is 66.

The spelling of 655944449556 in words is "six hundred fifty-five billion, nine hundred forty-four million, four hundred forty-nine thousand, five hundred fifty-six".