669134431966 has 96 divisors (see below), whose sum is σ = 1372582012032. Its totient is φ = 240491643840.

The previous prime is 669134431921. The next prime is 669134431991.

669134431966 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×669134431966² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 669134431966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22786105 + ... + 22815451.

It is an arithmetic number, because the mean of its divisors is an integer number (14297729292).

Almost surely, 2^669134431966 is an apocalyptic number.

669134431966 is an abundant number, since it is smaller than the sum of its proper divisors (703447580066).

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

669134431966 is a wasteful number, since it uses less digits than its factorization.

669134431966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31014 (or 31007 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 58.

The spelling of 669134431966 in words is "six hundred sixty-nine billion, one hundred thirty-four million, four hundred thirty-one thousand, nine hundred sixty-six".