680785664458005 has 24 divisors (see below), whose sum is σ = 1223733243768672. Its totient is φ = 363085687710288.

The previous prime is 680785664457989. The next prime is 680785664458019. The reversal of 680785664458005 is 500854466587086.

680785664458005 is a `hidden beast` number, since 6 + 8 + 0 + 7 + 8 + 566 + 4 + 4 + 58 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 680785664458005 - 2⁴ = 680785664457989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 280158708439 + ... + 280158710868.

It is an arithmetic number, because the mean of its divisors is an integer number (50988885157028).

Almost surely, 2^{680785664458005} is an apocalyptic number.

It is an amenable number.

680785664458005 is a deficient number, since it is larger than the sum of its proper divisors (542947579310667).

680785664458005 is an equidigital number, since it uses as much as digits as its factorization.

680785664458005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560317419327 (or 560317419315 counting only the distinct ones).

The product of its (nonzero) digits is 1548288000, while the sum is 72.

The spelling of 680785664458005 in words is "six hundred eighty trillion, seven hundred eighty-five billion, six hundred sixty-four million, four hundred fifty-eight thousand, five".