680564601502402 has 16 divisors (see below), whose sum is σ = 1074679021728000. Its totient is φ = 322341705431280.

The previous prime is 680564601502301. The next prime is 680564601502427. The reversal of 680564601502402 is 204205106465086.

It is a happy number.

680564601502402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×680564601502402² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860725849 + ... + 861516172.

It is an arithmetic number, because the mean of its divisors is an integer number (67167438858000).

Almost surely, 2^{680564601502402} is an apocalyptic number.

680564601502402 is a deficient number, since it is larger than the sum of its proper divisors (394114420225598).

680564601502402 is a wasteful number, since it uses less digits than its factorization.

680564601502402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722252441.

The product of its (nonzero) digits is 2764800, while the sum is 49.

Adding to 680564601502402 its reverse (204205106465086), we get a palindrome (884769707967488).

The spelling of 680564601502402 in words is "six hundred eighty trillion, five hundred sixty-four billion, six hundred one million, five hundred two thousand, four hundred two".