669120516208 has 40 divisors (see below), whose sum is σ = 1312953108480. Its totient is φ = 330294694080.

The previous prime is 669120516199. The next prime is 669120516209. The reversal of 669120516208 is 802615021966.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669120516209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20216313 + ... + 20249383.

It is an arithmetic number, because the mean of its divisors is an integer number (32823827712).

Almost surely, 2^669120516208 is an apocalyptic number.

It is an amenable number.

669120516208 is a deficient number, since it is larger than the sum of its proper divisors (643832592272).

669120516208 is a wasteful number, since it uses less digits than its factorization.

669120516208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49165 (or 49159 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 669120516208 in words is "six hundred sixty-nine billion, one hundred twenty million, five hundred sixteen thousand, two hundred eight".