681033433497 has 16 divisors (see below), whose sum is σ = 909671301120. Its totient is φ = 453209187600.

The previous prime is 681033433477. The next prime is 681033433501. The reversal of 681033433497 is 794334330186.

It is not a de Polignac number, because 681033433497 - 2¹⁸ = 681033171353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681033433447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11690472 + ... + 11748582.

It is an arithmetic number, because the mean of its divisors is an integer number (56854456320).

Almost surely, 2^681033433497 is an apocalyptic number.

It is an amenable number.

681033433497 is a deficient number, since it is larger than the sum of its proper divisors (228637867623).

681033433497 is a wasteful number, since it uses less digits than its factorization.

681033433497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65044.

The product of its (nonzero) digits is 3919104, while the sum is 51.

The spelling of 681033433497 in words is "six hundred eighty-one billion, thirty-three million, four hundred thirty-three thousand, four hundred ninety-seven".