20322462077 has 2 divisors, whose sum is σ = 20322462078. Its totient is φ = 20322462076.

The previous prime is 20322462059. The next prime is 20322462089. The reversal of 20322462077 is 77026422302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11563561156 + 8758900921 = 107534^2 + 93589^2 .

It is a cyclic number.

It is not a de Polignac number, because 20322462077 - 2⁸ = 20322461821 is a prime.

It is a super-2 number, since 2×20322462077² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20322462977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161231038 + 10161231039.

It is an arithmetic number, because the mean of its divisors is an integer number (10161231039).

Almost surely, 2^20322462077 is an apocalyptic number.

It is an amenable number.

20322462077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322462077 is an equidigital number, since it uses as much as digits as its factorization.

20322462077 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 35.

Adding to 20322462077 its reverse (77026422302), we get a palindrome (97348884379).

The spelling of 20322462077 in words is "twenty billion, three hundred twenty-two million, four hundred sixty-two thousand, seventy-seven".