660353206650 has 96 divisors (see below), whose sum is σ = 1658980604160. Its totient is φ = 173804916480.

The previous prime is 660353206549. The next prime is 660353206691. The reversal of 660353206650 is 56602353066.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41858164 + ... + 41873936.

It is an arithmetic number, because the mean of its divisors is an integer number (17281047960).

Almost surely, 2^660353206650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660353206650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829490302080).

660353206650 is an abundant number, since it is smaller than the sum of its proper divisors (998627397510).

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

660353206650 is a wasteful number, since it uses less digits than its factorization.

660353206650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19400 (or 19395 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 42.

The spelling of 660353206650 in words is "six hundred sixty billion, three hundred fifty-three million, two hundred six thousand, six hundred fifty".