680223040981 has 32 divisors (see below), whose sum is σ = 773431566336. Its totient is φ = 592751880000.

The previous prime is 680223040961. The next prime is 680223040993. The reversal of 680223040981 is 189040322086.

It is a cyclic number.

It is not a de Polignac number, because 680223040981 - 2¹⁹ = 680222516693 is a prime.

It is a super-2 number, since 2×680223040981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680223040921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41921436 + ... + 41937658.

It is an arithmetic number, because the mean of its divisors is an integer number (24169736448).

Almost surely, 2^680223040981 is an apocalyptic number.

It is an amenable number.

680223040981 is a deficient number, since it is larger than the sum of its proper divisors (93208525355).

680223040981 is a wasteful number, since it uses less digits than its factorization.

680223040981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17793.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 680223040981 in words is "six hundred eighty billion, two hundred twenty-three million, forty thousand, nine hundred eighty-one".