669371611504 has 40 divisors (see below), whose sum is σ = 1368333492480. Its totient is φ = 316335038400.

The previous prime is 669371611477. The next prime is 669371611529. The reversal of 669371611504 is 405116173966.

It is a happy number.

669371611504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2423362 + ... + 2685409.

It is an arithmetic number, because the mean of its divisors is an integer number (34208337312).

Almost surely, 2^669371611504 is an apocalyptic number.

It is an amenable number.

669371611504 is an abundant number, since it is smaller than the sum of its proper divisors (698961880976).

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

669371611504 is a wasteful number, since it uses less digits than its factorization.

669371611504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5109229 (or 5109223 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 669371611504 in words is "six hundred sixty-nine billion, three hundred seventy-one million, six hundred eleven thousand, five hundred four".