10669508981 has 2 divisors, whose sum is σ = 10669508982. Its totient is φ = 10669508980.

The previous prime is 10669508951. The next prime is 10669508999. The reversal of 10669508981 is 18980596601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9630478225 + 1039030756 = 98135^2 + 32234^2 .

It is a cyclic number.

It is not a de Polignac number, because 10669508981 - 2³⁰ = 9595767157 is a prime.

It is a super-2 number, since 2×10669508981² (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 (10669508911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5334754490 + 5334754491.

It is an arithmetic number, because the mean of its divisors is an integer number (5334754491).

Almost surely, 2^10669508981 is an apocalyptic number.

It is an amenable number.

10669508981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10669508981 is an equidigital number, since it uses as much as digits as its factorization.

10669508981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 53.

The spelling of 10669508981 in words is "ten billion, six hundred sixty-nine million, five hundred eight thousand, nine hundred eighty-one".