669606912000 has 1792 divisors, whose sum is σ = 2816638755840. Its totient is φ = 157659955200.

The previous prime is 669606911999. The next prime is 669606912047. The reversal of 669606912000 is 219606966.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 29113343989 + ... + 29113344011.

It is an arithmetic number, because the mean of its divisors is an integer number (1571785020).

Almost surely, 2^669606912000 is an apocalyptic number.

669606912000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669606912000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1408319377920).

669606912000 is an abundant number, since it is smaller than the sum of its proper divisors (2147031843840).

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

669606912000 is an frugal number, since it uses more digits than its factorization.

669606912000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 669606912000 in words is "six hundred sixty-nine billion, six hundred six million, nine hundred twelve thousand".