18320622077 has 2 divisors, whose sum is σ = 18320622078. Its totient is φ = 18320622076.

The previous prime is 18320622071. The next prime is 18320622083. The reversal of 18320622077 is 77022602381.

It is a balanced prime because it is at equal distance from previous prime (18320622071) and next prime (18320622083).

It can be written as a sum of positive squares in only one way, i.e., 15609753721 + 2710868356 = 124939^2 + 52066^2 .

It is a cyclic number.

It is not a de Polignac number, because 18320622077 - 2⁸ = 18320621821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18320622077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18320622071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9160311038 + 9160311039.

It is an arithmetic number, because the mean of its divisors is an integer number (9160311039).

Almost surely, 2^18320622077 is an apocalyptic number.

It is an amenable number.

18320622077 is a deficient number, since it is larger than the sum of its proper divisors (1).

18320622077 is an equidigital number, since it uses as much as digits as its factorization.

18320622077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 18320622077 in words is "eighteen billion, three hundred twenty million, six hundred twenty-two thousand, seventy-seven".