669268841472 has 528 divisors, whose sum is σ = 2449005646464. Its totient is φ = 170975232000.

The previous prime is 669268841453. The next prime is 669268841503. The reversal of 669268841472 is 274148862966.

669268841472 is a `hidden beast` number, since 6 + 6 + 92 + 68 + 8 + 414 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (528).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

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, 43279822 + ... + 43295282.

Almost surely, 2^669268841472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669268841472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224502823232).

669268841472 is an abundant number, since it is smaller than the sum of its proper divisors (1779736804992).

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

669268841472 is a wasteful number, since it uses less digits than its factorization.

669268841472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15566 (or 15545 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 63.

The spelling of 669268841472 in words is "six hundred sixty-nine billion, two hundred sixty-eight million, eight hundred forty-one thousand, four hundred seventy-two".