10020766849 has 2 divisors, whose sum is σ = 10020766850. Its totient is φ = 10020766848.

The previous prime is 10020766843. The next prime is 10020766901. The reversal of 10020766849 is 94866702001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10011403249 + 9363600 = 100057^2 + 3060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020766849 is a prime.

It is not a weakly prime, because it can be changed into another prime (10020766843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010383424 + 5010383425.

It is an arithmetic number, because the mean of its divisors is an integer number (5010383425).

Almost surely, 2^10020766849 is an apocalyptic number.

It is an amenable number.

10020766849 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020766849 is an equidigital number, since it uses as much as digits as its factorization.

10020766849 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 10020766849 in words is "ten billion, twenty million, seven hundred sixty-six thousand, eight hundred forty-nine".