669538564552 has 32 divisors (see below), whose sum is σ = 1474857679680. Its totient is φ = 280925271360.

The previous prime is 669538564507. The next prime is 669538564553. The reversal of 669538564552 is 255465835966.

It is a super-3 number, since 3×669538564552³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (669538564553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292629348 + ... + 292631635.

It is an arithmetic number, because the mean of its divisors is an integer number (46089302490).

Almost surely, 2^669538564552 is an apocalyptic number.

It is an amenable number.

669538564552 is an abundant number, since it is smaller than the sum of its proper divisors (805319115128).

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

669538564552 is a wasteful number, since it uses less digits than its factorization.

669538564552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585261013 (or 585261009 counting only the distinct ones).

The product of its digits is 233280000, while the sum is 64.

The spelling of 669538564552 in words is "six hundred sixty-nine billion, five hundred thirty-eight million, five hundred sixty-four thousand, five hundred fifty-two".