655565321630 has 8 divisors (see below), whose sum is σ = 1180017578952. Its totient is φ = 262226128648.

The previous prime is 655565321611. The next prime is 655565321797. The reversal of 655565321630 is 36123565556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32778266072 + ... + 32778266091.

It is an arithmetic number, because the mean of its divisors is an integer number (147502197369).

Almost surely, 2^655565321630 is an apocalyptic number.

655565321630 is a deficient number, since it is larger than the sum of its proper divisors (524452257322).

655565321630 is a wasteful number, since it uses less digits than its factorization.

655565321630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65556532170.

The product of its (nonzero) digits is 2430000, while the sum is 47.

The spelling of 655565321630 in words is "six hundred fifty-five billion, five hundred sixty-five million, three hundred twenty-one thousand, six hundred thirty".