668926411428 has 48 divisors (see below), whose sum is σ = 1717790147136. Its totient is φ = 200911119360.

The previous prime is 668926411409. The next prime is 668926411453. The reversal of 668926411428 is 824114629866.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22408201 + ... + 22438032.

It is an arithmetic number, because the mean of its divisors is an integer number (35787294732).

Almost surely, 2^668926411428 is an apocalyptic number.

It is an amenable number.

668926411428 is an abundant number, since it is smaller than the sum of its proper divisors (1048863735708).

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

668926411428 is a wasteful number, since it uses less digits than its factorization.

668926411428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44846364 (or 44846362 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 57.

The spelling of 668926411428 in words is "six hundred sixty-eight billion, nine hundred twenty-six million, four hundred eleven thousand, four hundred twenty-eight".