20013653426843 has 2 divisors, whose sum is σ = 20013653426844. Its totient is φ = 20013653426842.

The previous prime is 20013653426749. The next prime is 20013653426891. The reversal of 20013653426843 is 34862435631002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20013653426843 - 2⁴⁴ = 2421467382427 is a prime.

It is not a weakly prime, because it can be changed into another prime (20013653426443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006826713421 + 10006826713422.

It is an arithmetic number, because the mean of its divisors is an integer number (10006826713422).

Almost surely, 2^{20013653426843} is an apocalyptic number.

20013653426843 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013653426843 is an equidigital number, since it uses as much as digits as its factorization.

20013653426843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 20013653426843 in words is "twenty trillion, thirteen billion, six hundred fifty-three million, four hundred twenty-six thousand, eight hundred forty-three".