655752257556 has 48 divisors (see below), whose sum is σ = 1714300754880. Its totient is φ = 193342187520.

The previous prime is 655752257551. The next prime is 655752257579.

655752257556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×655752257556² (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 655752257556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655752257551) 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, 67127821 + ... + 67137588.

It is an arithmetic number, because the mean of its divisors is an integer number (35714599060).

Almost surely, 2^655752257556 is an apocalyptic number.

655752257556 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

655752257556 is an abundant number, since it is smaller than the sum of its proper divisors (1058548497324).

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

655752257556 is a wasteful number, since it uses less digits than its factorization.

655752257556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134265464 (or 134265462 counting only the distinct ones).

The product of its digits is 110250000, while the sum is 60.

The spelling of 655752257556 in words is "six hundred fifty-five billion, seven hundred fifty-two million, two hundred fifty-seven thousand, five hundred fifty-six".