680442400243 has 8 divisors (see below), whose sum is σ = 685495518048. Its totient is φ = 675407963904.

The previous prime is 680442400237. The next prime is 680442400277. The reversal of 680442400243 is 342004244086.

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

It is a cyclic number.

It is not a de Polignac number, because 680442400243 - 2¹³ = 680442392051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680442407243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4597246 + ... + 4742947.

It is an arithmetic number, because the mean of its divisors is an integer number (85686939756).

Almost surely, 2^680442400243 is an apocalyptic number.

680442400243 is a deficient number, since it is larger than the sum of its proper divisors (5053117805).

680442400243 is a wasteful number, since it uses less digits than its factorization.

680442400243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9340733.

The product of its (nonzero) digits is 147456, while the sum is 37.

The spelling of 680442400243 in words is "six hundred eighty billion, four hundred forty-two million, four hundred thousand, two hundred forty-three".