667606620121004 has 12 divisors (see below), whose sum is σ = 1168313485282944. Its totient is φ = 333802767183024.

The previous prime is 667606620120851. The next prime is 667606620121037. The reversal of 667606620121004 is 400121026606766.

It is a self number, because there is not a number n which added to its sum of digits gives 667606620121004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132946124 + ... + 137876339.

It is an arithmetic number, because the mean of its divisors is an integer number (97359457106912).

Almost surely, 2^{667606620121004} is an apocalyptic number.

It is an amenable number.

667606620121004 is a deficient number, since it is larger than the sum of its proper divisors (500706865161940).

667606620121004 is a wasteful number, since it uses less digits than its factorization.

667606620121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271438744 (or 271438742 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 667606620121004 in words is "six hundred sixty-seven trillion, six hundred six billion, six hundred twenty million, one hundred twenty-one thousand, four".