668320122624 has 1152 divisors, whose sum is σ = 2433177600000. Its totient is φ = 160944537600.

The previous prime is 668320122581. The next prime is 668320122637. The reversal of 668320122624 is 426221023866.

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 polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3358392477 + ... + 3358392675.

Almost surely, 2^668320122624 is an apocalyptic number.

668320122624 is a gapful number since it is divisible by the number (64) 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 668320122624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216588800000).

668320122624 is an abundant number, since it is smaller than the sum of its proper divisors (1764857477376).

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

668320122624 is a wasteful number, since it uses less digits than its factorization.

668320122624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 668320122624 in words is "six hundred sixty-eight billion, three hundred twenty million, one hundred twenty-two thousand, six hundred twenty-four".