680800134668 has 6 divisors (see below), whose sum is σ = 1191400235676. Its totient is φ = 340400067332.

The previous prime is 680800134601. The next prime is 680800134769. The reversal of 680800134668 is 866431008086.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85100016830 + ... + 85100016837.

It is an arithmetic number, because the mean of its divisors is an integer number (198566705946).

Almost surely, 2^680800134668 is an apocalyptic number.

It is an amenable number.

680800134668 is a deficient number, since it is larger than the sum of its proper divisors (510600101008).

680800134668 is a wasteful number, since it uses less digits than its factorization.

680800134668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170200033671 (or 170200033669 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 680800134668 in words is "six hundred eighty billion, eight hundred million, one hundred thirty-four thousand, six hundred sixty-eight".