655650270661 has 32 divisors (see below), whose sum is σ = 722597511168. Its totient is φ = 592999989120.

The previous prime is 655650270641. The next prime is 655650270679. The reversal of 655650270661 is 166072056556.

It is a cyclic number.

It is not a de Polignac number, because 655650270661 - 2⁵ = 655650270629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655650270641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5510380 + ... + 5628106.

It is an arithmetic number, because the mean of its divisors is an integer number (22581172224).

Almost surely, 2^655650270661 is an apocalyptic number.

It is an amenable number.

655650270661 is a deficient number, since it is larger than the sum of its proper divisors (66947240507).

655650270661 is a wasteful number, since it uses less digits than its factorization.

655650270661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117961.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 655650270661 in words is "six hundred fifty-five billion, six hundred fifty million, two hundred seventy thousand, six hundred sixty-one".