680898979405534 has 8 divisors (see below), whose sum is σ = 1081427790820608. Its totient is φ = 320423049132000.

The previous prime is 680898979405531. The next prime is 680898979405607. The reversal of 680898979405534 is 435504979898086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680898979405531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10013220285342 + ... + 10013220285409.

It is an arithmetic number, because the mean of its divisors is an integer number (135178473852576).

Almost surely, 2^{680898979405534} is an apocalyptic number.

680898979405534 is a deficient number, since it is larger than the sum of its proper divisors (400528811415074).

680898979405534 is a wasteful number, since it uses less digits than its factorization.

680898979405534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20026440570770.

The product of its (nonzero) digits is 18811699200, while the sum is 85.

The spelling of 680898979405534 in words is "six hundred eighty trillion, eight hundred ninety-eight billion, nine hundred seventy-nine million, four hundred five thousand, five hundred thirty-four".