669429600000 has 432 divisors, whose sum is σ = 2545128101376. Its totient is φ = 153008640000.

The previous prime is 669429599983. The next prime is 669429600023. The reversal of 669429600000 is 6924966.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16780077 + ... + 16819923.

Almost surely, 2^669429600000 is an apocalyptic number.

669429600000 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 669429600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1272564050688).

669429600000 is an abundant number, since it is smaller than the sum of its proper divisors (1875698501376).

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

669429600000 is an frugal number, since it uses more digits than its factorization.

669429600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39898 (or 39864 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The spelling of 669429600000 in words is "six hundred sixty-nine billion, four hundred twenty-nine million, six hundred thousand".