679938205128 has 128 divisors (see below), whose sum is σ = 2159605432320. Its totient is φ = 173539687680.

The previous prime is 679938205109. The next prime is 679938205147. The reversal of 679938205128 is 821502839976.

It is an interprime number because it is at equal distance from previous prime (679938205109) and next prime (679938205147).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4953700 + ... + 5089107.

It is an arithmetic number, because the mean of its divisors is an integer number (16871917440).

Almost surely, 2^679938205128 is an apocalyptic number.

It is an amenable number.

679938205128 is an abundant number, since it is smaller than the sum of its proper divisors (1479667227192).

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

679938205128 is a wasteful number, since it uses less digits than its factorization.

679938205128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10042867 (or 10042863 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 679938205128 in words is "six hundred seventy-nine billion, nine hundred thirty-eight million, two hundred five thousand, one hundred twenty-eight".