20460788669 has 2 divisors, whose sum is σ = 20460788670. Its totient is φ = 20460788668.

The previous prime is 20460788659. The next prime is 20460788687. The reversal of 20460788669 is 96688706402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19329340900 + 1131447769 = 139030^2 + 33637^2 .

It is a cyclic number.

It is not a de Polignac number, because 20460788669 - 2²⁸ = 20192353213 is a prime.

It is a super-2 number, since 2×20460788669² (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 (20460788629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10230394334 + 10230394335.

It is an arithmetic number, because the mean of its divisors is an integer number (10230394335).

Almost surely, 2^20460788669 is an apocalyptic number.

It is an amenable number.

20460788669 is a deficient number, since it is larger than the sum of its proper divisors (1).

20460788669 is an equidigital number, since it uses as much as digits as its factorization.

20460788669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 20460788669 in words is "twenty billion, four hundred sixty million, seven hundred eighty-eight thousand, six hundred sixty-nine".