21883853669987 has 2 divisors, whose sum is σ = 21883853669988. Its totient is φ = 21883853669986.

The previous prime is 21883853669959. The next prime is 21883853670047. The reversal of 21883853669987 is 78996635838812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21883853669987 - 2²⁸ = 21883585234531 is a prime.

It is not a weakly prime, because it can be changed into another prime (21883853662987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10941926834993 + 10941926834994.

It is an arithmetic number, because the mean of its divisors is an integer number (10941926834994).

Almost surely, 2^{21883853669987} is an apocalyptic number.

21883853669987 is a deficient number, since it is larger than the sum of its proper divisors (1).

21883853669987 is an equidigital number, since it uses as much as digits as its factorization.

21883853669987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7524679680, while the sum is 83.

The spelling of 21883853669987 in words is "twenty-one trillion, eight hundred eighty-three billion, eight hundred fifty-three million, six hundred sixty-nine thousand, nine hundred eighty-seven".