668125093216 has 36 divisors (see below), whose sum is σ = 1530125775108. Its totient is φ = 286339324992.

The previous prime is 668125093189. The next prime is 668125093217. The reversal of 668125093216 is 612390521866.

It is a super-2 number, since 2×668125093216² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 668125093216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668125093217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213048526 + ... + 213051661.

It is an arithmetic number, because the mean of its divisors is an integer number (42503493753).

Almost surely, 2^668125093216 is an apocalyptic number.

It is an amenable number.

668125093216 is an abundant number, since it is smaller than the sum of its proper divisors (862000681892).

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

668125093216 is a wasteful number, since it uses less digits than its factorization.

668125093216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426100211 (or 426100196 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 668125093216 in words is "six hundred sixty-eight billion, one hundred twenty-five million, ninety-three thousand, two hundred sixteen".