680146955720 has 16 divisors (see below), whose sum is σ = 1530330650460. Its totient is φ = 272058782272.

The previous prime is 680146955717. The next prime is 680146955773. The reversal of 680146955720 is 27559641086.

It can be written as a sum of positive squares in 2 ways, for example, as 669624709636 + 10522246084 = 818306^2 + 102578^2 .

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, 8501836907 + ... + 8501836986.

Almost surely, 2^680146955720 is an apocalyptic number.

It is an amenable number.

680146955720 is an abundant number, since it is smaller than the sum of its proper divisors (850183694740).

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

680146955720 is a wasteful number, since it uses less digits than its factorization.

680146955720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17003673904 (or 17003673900 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 680146955720 in words is "six hundred eighty billion, one hundred forty-six million, nine hundred fifty-five thousand, seven hundred twenty".