681072653226 has 32 divisors (see below), whose sum is σ = 1556845240320. Its totient is φ = 194578718256.

The previous prime is 681072653161. The next prime is 681072653237. The reversal of 681072653226 is 622356270186.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 60975 + ... + 1168701.

It is an arithmetic number, because the mean of its divisors is an integer number (48651413760).

Almost surely, 2^681072653226 is an apocalyptic number.

681072653226 is an abundant number, since it is smaller than the sum of its proper divisors (875772587094).

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

681072653226 is a wasteful number, since it uses less digits than its factorization.

681072653226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122378.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 681072653226 in words is "six hundred eighty-one billion, seventy-two million, six hundred fifty-three thousand, two hundred twenty-six".