10971590681 has 2 divisors, whose sum is σ = 10971590682. Its totient is φ = 10971590680.

The previous prime is 10971590671. The next prime is 10971590701. The reversal of 10971590681 is 18609517901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10135455625 + 836135056 = 100675^2 + 28916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10971590681 is a prime.

It is a super-2 number, since 2×10971590681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10971590671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5485795340 + 5485795341.

It is an arithmetic number, because the mean of its divisors is an integer number (5485795341).

Almost surely, 2^10971590681 is an apocalyptic number.

It is an amenable number.

10971590681 is a deficient number, since it is larger than the sum of its proper divisors (1).

10971590681 is an equidigital number, since it uses as much as digits as its factorization.

10971590681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 47.

The spelling of 10971590681 in words is "ten billion, nine hundred seventy-one million, five hundred ninety thousand, six hundred eighty-one".