20132216677 has 2 divisors, whose sum is σ = 20132216678. Its totient is φ = 20132216676.

The previous prime is 20132216647. The next prime is 20132216681. The reversal of 20132216677 is 77661223102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20036685601 + 95531076 = 141551^2 + 9774^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132216677 - 2¹⁹ = 20131692389 is a prime.

It is a super-2 number, since 2×20132216677² (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 (20132216627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066108338 + 10066108339.

It is an arithmetic number, because the mean of its divisors is an integer number (10066108339).

Almost surely, 2^20132216677 is an apocalyptic number.

It is an amenable number.

20132216677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132216677 is an equidigital number, since it uses as much as digits as its factorization.

20132216677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

Adding to 20132216677 its reverse (77661223102), we get a palindrome (97793439779).

The spelling of 20132216677 in words is "twenty billion, one hundred thirty-two million, two hundred sixteen thousand, six hundred seventy-seven".