680266117489 has 4 divisors (see below), whose sum is σ = 777446991424. Its totient is φ = 583085243556.

The previous prime is 680266117457. The next prime is 680266117493. The reversal of 680266117489 is 984711662086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984711662086 = 2 ⋅492355831043.

It is a cyclic number.

It is not a de Polignac number, because 680266117489 - 2⁵ = 680266117457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680266112489) 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, 48590436957 + ... + 48590436970.

It is an arithmetic number, because the mean of its divisors is an integer number (194361747856).

Almost surely, 2^680266117489 is an apocalyptic number.

It is an amenable number.

680266117489 is a deficient number, since it is larger than the sum of its proper divisors (97180873935).

680266117489 is an equidigital number, since it uses as much as digits as its factorization.

680266117489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97180873934.

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 680266117489 in words is "six hundred eighty billion, two hundred sixty-six million, one hundred seventeen thousand, four hundred eighty-nine".