18883666705997 has 2 divisors, whose sum is σ = 18883666705998. Its totient is φ = 18883666705996.

The previous prime is 18883666705973. The next prime is 18883666705999. The reversal of 18883666705997 is 79950766638881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18878555742916 + 5110963081 = 4344946^2 + 71491^2 .

It is a cyclic number.

It is not a de Polignac number, because 18883666705997 - 2³⁶ = 18814947229261 is a prime.

Together with 18883666705999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18883666705999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9441833352998 + 9441833352999.

It is an arithmetic number, because the mean of its divisors is an integer number (9441833352999).

Almost surely, 2^{18883666705997} is an apocalyptic number.

It is an amenable number.

18883666705997 is a deficient number, since it is larger than the sum of its proper divisors (1).

18883666705997 is an equidigital number, since it uses as much as digits as its factorization.

18883666705997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6584094720, while the sum is 83.

The spelling of 18883666705997 in words is "eighteen trillion, eight hundred eighty-three billion, six hundred sixty-six million, seven hundred five thousand, nine hundred ninety-seven".