20226693797 has 2 divisors, whose sum is σ = 20226693798. Its totient is φ = 20226693796.

The previous prime is 20226693779. The next prime is 20226693811. The reversal of 20226693797 is 79739662202.

Together with previous prime (20226693779) 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., 16535645281 + 3691048516 = 128591^2 + 60754^2 .

It is a cyclic number.

It is not a de Polignac number, because 20226693797 - 2⁶ = 20226693733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20226692797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10113346898 + 10113346899.

It is an arithmetic number, because the mean of its divisors is an integer number (10113346899).

Almost surely, 2^20226693797 is an apocalyptic number.

It is an amenable number.

20226693797 is a deficient number, since it is larger than the sum of its proper divisors (1).

20226693797 is an equidigital number, since it uses as much as digits as its factorization.

20226693797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 53.

The spelling of 20226693797 in words is "twenty billion, two hundred twenty-six million, six hundred ninety-three thousand, seven hundred ninety-seven".