10066820497 has 2 divisors, whose sum is σ = 10066820498. Its totient is φ = 10066820496.

The previous prime is 10066820479. The next prime is 10066820501. The reversal of 10066820497 is 79402866001.

Together with previous prime (10066820479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8552365441 + 1514455056 = 92479^2 + 38916^2 .

It is a cyclic number.

It is not a de Polignac number, because 10066820497 - 2²⁷ = 9932602769 is a prime.

It is not a weakly prime, because it can be changed into another prime (10066820437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5033410248 + 5033410249.

It is an arithmetic number, because the mean of its divisors is an integer number (5033410249).

Almost surely, 2^10066820497 is an apocalyptic number.

It is an amenable number.

10066820497 is a deficient number, since it is larger than the sum of its proper divisors (1).

10066820497 is an equidigital number, since it uses as much as digits as its factorization.

10066820497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 10066820497 in words is "ten billion, sixty-six million, eight hundred twenty thousand, four hundred ninety-seven".