655345202543556 has 36 divisors (see below), whose sum is σ = 1778794121191248. Its totient is φ = 187241486440848.

The previous prime is 655345202543539. The next prime is 655345202543627.

It is a happy number.

655345202543556 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 655345202543556.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 557266328106 + ... + 557266329281.

It is an arithmetic number, because the mean of its divisors is an integer number (49410947810868).

Almost surely, 2^{655345202543556} is an apocalyptic number.

It is an amenable number.

655345202543556 is an abundant number, since it is smaller than the sum of its proper divisors (1123448918647692).

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

655345202543556 is a wasteful number, since it uses less digits than its factorization.

655345202543556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114532657408 (or 1114532657399 counting only the distinct ones).

The product of its (nonzero) digits is 324000000, while the sum is 60.

The spelling of 655345202543556 in words is "six hundred fifty-five trillion, three hundred forty-five billion, two hundred two million, five hundred forty-three thousand, five hundred fifty-six".