669769686348 has 48 divisors (see below), whose sum is σ = 1891114412544. Its totient is φ = 180106133760.

The previous prime is 669769686293. The next prime is 669769686379. The reversal of 669769686348 is 843686967966.

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, 234511768 + ... + 234514623.

It is an arithmetic number, because the mean of its divisors is an integer number (39398216928).

Almost surely, 2^669769686348 is an apocalyptic number.

669769686348 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

669769686348 is an abundant number, since it is smaller than the sum of its proper divisors (1221344726196).

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

669769686348 is a wasteful number, since it uses less digits than its factorization.

669769686348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469026422 (or 469026420 counting only the distinct ones).

The product of its digits is 3386105856, while the sum is 78.

The spelling of 669769686348 in words is "six hundred sixty-nine billion, seven hundred sixty-nine million, six hundred eighty-six thousand, three hundred forty-eight".