10289667821 has 2 divisors, whose sum is σ = 10289667822. Its totient is φ = 10289667820.

The previous prime is 10289667781. The next prime is 10289667851. The reversal of 10289667821 is 12876698201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9802980100 + 486687721 = 99010^2 + 22061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10289667821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10289667821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10289667851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5144833910 + 5144833911.

It is an arithmetic number, because the mean of its divisors is an integer number (5144833911).

Almost surely, 2^10289667821 is an apocalyptic number.

It is an amenable number.

10289667821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10289667821 is an equidigital number, since it uses as much as digits as its factorization.

10289667821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 10289667821 in words is "ten billion, two hundred eighty-nine million, six hundred sixty-seven thousand, eight hundred twenty-one".