680217144456 has 16 divisors (see below), whose sum is σ = 1700542861200. Its totient is φ = 226739048144.

The previous prime is 680217144293. The next prime is 680217144463. The reversal of 680217144456 is 654441712086.

It is a super-2 number, since 2×680217144456² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14171190486 + ... + 14171190533.

It is an arithmetic number, because the mean of its divisors is an integer number (106283928825).

Almost surely, 2^680217144456 is an apocalyptic number.

It is an amenable number.

680217144456 is an abundant number, since it is smaller than the sum of its proper divisors (1020325716744).

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

680217144456 is a wasteful number, since it uses less digits than its factorization.

680217144456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28342381028 (or 28342381024 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 680217144456 in words is "six hundred eighty billion, two hundred seventeen million, one hundred forty-four thousand, four hundred fifty-six".