10221766739 has 2 divisors, whose sum is σ = 10221766740. Its totient is φ = 10221766738.

The previous prime is 10221766733. The next prime is 10221766771. The reversal of 10221766739 is 93766712201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221766739 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10221766739.

It is not a weakly prime, because it can be changed into another prime (10221766733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110883369 + 5110883370.

It is an arithmetic number, because the mean of its divisors is an integer number (5110883370).

Almost surely, 2^10221766739 is an apocalyptic number.

10221766739 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221766739 is an equidigital number, since it uses as much as digits as its factorization.

10221766739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 10221766739 in words is "ten billion, two hundred twenty-one million, seven hundred sixty-six thousand, seven hundred thirty-nine".