669250799747712 has 960 divisors, whose sum is σ = 2424491422385760. Its totient is φ = 176141576540160.

The previous prime is 669250799747683. The next prime is 669250799747737. The reversal of 669250799747712 is 217747997052966.

669250799747712 is a `hidden beast` number, since 6 + 6 + 9 + 2 + 50 + 7 + 9 + 97 + 477 + 1 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 17655052663 + ... + 17655090569.

Almost surely, 2^{669250799747712} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669250799747712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212245711192880).

669250799747712 is an abundant number, since it is smaller than the sum of its proper divisors (1755240622638048).

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

669250799747712 is a wasteful number, since it uses less digits than its factorization.

669250799747712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38459 (or 38423 counting only the distinct ones).

The product of its (nonzero) digits is 5040947520, while the sum is 81.

The spelling of 669250799747712 in words is "six hundred sixty-nine trillion, two hundred fifty billion, seven hundred ninety-nine million, seven hundred forty-seven thousand, seven hundred twelve".