10010609981 has 2 divisors, whose sum is σ = 10010609982. Its totient is φ = 10010609980.

The previous prime is 10010609941. The next prime is 10010610007. The reversal of 10010609981 is 18990601001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7879402756 + 2131207225 = 88766^2 + 46165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10010609981 is a prime.

It is a super-2 number, since 2×10010609981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10010609941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005304990 + 5005304991.

It is an arithmetic number, because the mean of its divisors is an integer number (5005304991).

Almost surely, 2^10010609981 is an apocalyptic number.

It is an amenable number.

10010609981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010609981 is an equidigital number, since it uses as much as digits as its factorization.

10010609981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 10010609981 in words is "ten billion, ten million, six hundred nine thousand, nine hundred eighty-one".