20077699111669 has 2 divisors, whose sum is σ = 20077699111670. Its totient is φ = 20077699111668.

The previous prime is 20077699111633. The next prime is 20077699111727. The reversal of 20077699111669 is 96611199677002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19818656794225 + 259042317444 = 4451815^2 + 508962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20077699111669 is a prime.

It is a super-2 number, since 2×20077699111669² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20077699111669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20077699111619) 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, 10038849555834 + 10038849555835.

It is an arithmetic number, because the mean of its divisors is an integer number (10038849555835).

Almost surely, 2^{20077699111669} is an apocalyptic number.

It is an amenable number.

20077699111669 is a deficient number, since it is larger than the sum of its proper divisors (1).

20077699111669 is an equidigital number, since it uses as much as digits as its factorization.

20077699111669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15431472, while the sum is 64.

The spelling of 20077699111669 in words is "twenty trillion, seventy-seven billion, six hundred ninety-nine million, one hundred eleven thousand, six hundred sixty-nine".