10497418560821 has 2 divisors, whose sum is σ = 10497418560822. Its totient is φ = 10497418560820.

The previous prime is 10497418560721. The next prime is 10497418560833. The reversal of 10497418560821 is 12806581479401.

10497418560821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6031022402596 + 4466396158225 = 2455814^2 + 2113385^2 .

It is a cyclic number.

It is not a de Polignac number, because 10497418560821 - 2¹⁸ = 10497418298677 is a prime.

It is a super-2 number, since 2×10497418560821² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10497418560721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5248709280410 + 5248709280411.

It is an arithmetic number, because the mean of its divisors is an integer number (5248709280411).

Almost surely, 2^{10497418560821} is an apocalyptic number.

It is an amenable number.

10497418560821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10497418560821 is an equidigital number, since it uses as much as digits as its factorization.

10497418560821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 10497418560821 in words is "ten trillion, four hundred ninety-seven billion, four hundred eighteen million, five hundred sixty thousand, eight hundred twenty-one".