655455554556 has 192 divisors, whose sum is σ = 1735367929344. Its totient is φ = 190802304000.

The previous prime is 655455554543. The next prime is 655455554603.

655455554556 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 655455554556.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 195832075 + ... + 195835421.

It is an arithmetic number, because the mean of its divisors is an integer number (9038374632).

Almost surely, 2^655455554556 is an apocalyptic number.

655455554556 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655455554556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867683964672).

655455554556 is an abundant number, since it is smaller than the sum of its proper divisors (1079912374788).

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

655455554556 is a wasteful number, since it uses less digits than its factorization.

655455554556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900 (or 3898 counting only the distinct ones).

The product of its digits is 225000000, while the sum is 60.

The spelling of 655455554556 in words is "six hundred fifty-five billion, four hundred fifty-five million, five hundred fifty-four thousand, five hundred fifty-six".