681011559203 has 16 divisors (see below), whose sum is σ = 719404747776. Its totient is φ = 643648209120.

The previous prime is 681011559197. The next prime is 681011559209. The reversal of 681011559203 is 302955110186.

It is an interprime number because it is at equal distance from previous prime (681011559197) and next prime (681011559209).

It is a cyclic number.

It is not a de Polignac number, because 681011559203 - 2¹⁴ = 681011542819 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681011559209) 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, 16024100 + ... + 16066542.

It is an arithmetic number, because the mean of its divisors is an integer number (44962796736).

Almost surely, 2^681011559203 is an apocalyptic number.

681011559203 is a deficient number, since it is larger than the sum of its proper divisors (38393188573).

681011559203 is a wasteful number, since it uses less digits than its factorization.

681011559203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54554.

The product of its (nonzero) digits is 64800, while the sum is 41.

Adding to 681011559203 its reverse (302955110186), we get a palindrome (983966669389).

The spelling of 681011559203 in words is "six hundred eighty-one billion, eleven million, five hundred fifty-nine thousand, two hundred three".