18773883476969 has 2 divisors, whose sum is σ = 18773883476970. Its totient is φ = 18773883476968.

The previous prime is 18773883476963. The next prime is 18773883477031. The reversal of 18773883476969 is 96967438837781.

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., 18224190240400 + 549693236569 = 4268980^2 + 741413^2 .

It is a cyclic number.

It is not a de Polignac number, because 18773883476969 - 2³² = 18769588509673 is a prime.

It is a super-2 number, since 2×18773883476969² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18773883476963) 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, 9386941738484 + 9386941738485.

It is an arithmetic number, because the mean of its divisors is an integer number (9386941738485).

Almost surely, 2^{18773883476969} is an apocalyptic number.

It is an amenable number.

18773883476969 is a deficient number, since it is larger than the sum of its proper divisors (1).

18773883476969 is an equidigital number, since it uses as much as digits as its factorization.

18773883476969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18435465216, while the sum is 86.

The spelling of 18773883476969 in words is "eighteen trillion, seven hundred seventy-three billion, eight hundred eighty-three million, four hundred seventy-six thousand, nine hundred sixty-nine".