655340216556636 has 48 divisors (see below), whose sum is σ = 1829724821159200. Its totient is φ = 201643143555456.

The previous prime is 655340216556617. The next prime is 655340216556827. The reversal of 655340216556636 is 636655612043556.

It is a happy number.

655340216556636 is a `hidden beast` number, since 6 + 5 + 5 + 3 + 4 + 0 + 2 + 1 + 65 + 566 + 3 + 6 = 666.

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, 233383266601 + ... + 233383269408.

Almost surely, 2^{655340216556636} is an apocalyptic number.

It is an amenable number.

655340216556636 is an abundant number, since it is smaller than the sum of its proper divisors (1174384604602564).

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

655340216556636 is a wasteful number, since it uses less digits than its factorization.

655340216556636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466766536035 (or 466766536027 counting only the distinct ones).

The product of its (nonzero) digits is 349920000, while the sum is 63.

The spelling of 655340216556636 in words is "six hundred fifty-five trillion, three hundred forty billion, two hundred sixteen million, five hundred fifty-six thousand, six hundred thirty-six".