20332230077 has 2 divisors, whose sum is σ = 20332230078. Its totient is φ = 20332230076.

The previous prime is 20332230031. The next prime is 20332230101. The reversal of 20332230077 is 77003223302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20088526756 + 243703321 = 141734^2 + 15611^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332230077 - 2⁶ = 20332230013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20332250077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166115038 + 10166115039.

It is an arithmetic number, because the mean of its divisors is an integer number (10166115039).

Almost surely, 2^20332230077 is an apocalyptic number.

It is an amenable number.

20332230077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332230077 is an equidigital number, since it uses as much as digits as its factorization.

20332230077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 29.

Adding to 20332230077 its reverse (77003223302), we get a palindrome (97335453379).

The spelling of 20332230077 in words is "twenty billion, three hundred thirty-two million, two hundred thirty thousand, seventy-seven".