655662266556 has 48 divisors (see below), whose sum is σ = 1669641361920. Its totient is φ = 198604241920.

The previous prime is 655662266549. The next prime is 655662266561.

655662266556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×655662266556² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 655662266556.

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, 691941 + ... + 1337948.

It is an arithmetic number, because the mean of its divisors is an integer number (34784195040).

Almost surely, 2^655662266556 is an apocalyptic number.

655662266556 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

655662266556 is an abundant number, since it is smaller than the sum of its proper divisors (1013979095364).

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

655662266556 is a wasteful number, since it uses less digits than its factorization.

655662266556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032354 (or 2032352 counting only the distinct ones).

The product of its digits is 116640000, while the sum is 60.

The spelling of 655662266556 in words is "six hundred fifty-five billion, six hundred sixty-two million, two hundred sixty-six thousand, five hundred fifty-six".