669513600000 has 1848 divisors, whose sum is σ = 2936361498336. Its totient is φ = 149299200000.

The previous prime is 669513599987. The next prime is 669513600029. The reversal of 669513600000 is 6315966.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 16329599980 + ... + 16329600020.

Almost surely, 2^669513600000 is an apocalyptic number.

669513600000 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 669513600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468180749168).

669513600000 is an abundant number, since it is smaller than the sum of its proper divisors (2266847898336).

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

669513600000 is an frugal number, since it uses more digits than its factorization.

669513600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

Adding to 669513600000 its reverse (6315966), we get a palindrome (669519915966).

The spelling of 669513600000 in words is "six hundred sixty-nine billion, five hundred thirteen million, six hundred thousand".