669378882140 has 12 divisors (see below), whose sum is σ = 1405695652536. Its totient is φ = 267751552848.

The previous prime is 669378882119. The next prime is 669378882247. The reversal of 669378882140 is 41288873966.

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, 16734472034 + ... + 16734472073.

It is an arithmetic number, because the mean of its divisors is an integer number (117141304378).

Almost surely, 2^669378882140 is an apocalyptic number.

It is an amenable number.

669378882140 is an abundant number, since it is smaller than the sum of its proper divisors (736316770396).

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

669378882140 is a wasteful number, since it uses less digits than its factorization.

669378882140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33468944116 (or 33468944114 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 62.

The spelling of 669378882140 in words is "six hundred sixty-nine billion, three hundred seventy-eight million, eight hundred eighty-two thousand, one hundred forty".