660650972094 has 32 divisors (see below), whose sum is σ = 1471600526880. Its totient is φ = 219693902400.

The previous prime is 660650971979. The next prime is 660650972101. The reversal of 660650972094 is 490279056066.

660650972094 is a `hidden beast` number, since 6 + 60 + 6 + 509 + 72 + 0 + 9 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 660650972094.

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, 14507287 + ... + 14552754.

It is an arithmetic number, because the mean of its divisors is an integer number (45987516465).

Almost surely, 2^660650972094 is an apocalyptic number.

660650972094 is an abundant number, since it is smaller than the sum of its proper divisors (810949554786).

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

660650972094 is a wasteful number, since it uses less digits than its factorization.

660650972094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29060473 (or 29060467 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 660650972094 in words is "six hundred sixty billion, six hundred fifty million, nine hundred seventy-two thousand, ninety-four".