669940463612 has 48 divisors (see below), whose sum is σ = 1407396006912. Its totient is φ = 272815171200.

The previous prime is 669940463573. The next prime is 669940463659. The reversal of 669940463612 is 216364049966.

It is a super-2 number, since 2×669940463612² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 3347393 + ... + 3541880.

It is an arithmetic number, because the mean of its divisors is an integer number (29320750144).

Almost surely, 2^669940463612 is an apocalyptic number.

It is an amenable number.

669940463612 is an abundant number, since it is smaller than the sum of its proper divisors (737455543300).

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

669940463612 is a wasteful number, since it uses less digits than its factorization.

669940463612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6889458 (or 6889456 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 56.

The spelling of 669940463612 in words is "six hundred sixty-nine billion, nine hundred forty million, four hundred sixty-three thousand, six hundred twelve".