22639443077 has 2 divisors, whose sum is σ = 22639443078. Its totient is φ = 22639443076.

The previous prime is 22639443041. The next prime is 22639443083. The reversal of 22639443077 is 77034493622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21267555556 + 1371887521 = 145834^2 + 37039^2 .

It is a cyclic number.

It is not a de Polignac number, because 22639443077 - 2¹² = 22639438981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22639443577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11319721538 + 11319721539.

It is an arithmetic number, because the mean of its divisors is an integer number (11319721539).

Almost surely, 2^22639443077 is an apocalyptic number.

It is an amenable number.

22639443077 is a deficient number, since it is larger than the sum of its proper divisors (1).

22639443077 is an equidigital number, since it uses as much as digits as its factorization.

22639443077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 47.

The spelling of 22639443077 in words is "twenty-two billion, six hundred thirty-nine million, four hundred forty-three thousand, seventy-seven".