20389342887941 has 2 divisors, whose sum is σ = 20389342887942. Its totient is φ = 20389342887940.

The previous prime is 20389342887917. The next prime is 20389342887961. The reversal of 20389342887941 is 14978824398302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16628248950625 + 3761093937316 = 4077775^2 + 1939354^2 .

It is a cyclic number.

It is not a de Polignac number, because 20389342887941 - 2¹⁸ = 20389342625797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20389342887961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10194671443970 + 10194671443971.

It is an arithmetic number, because the mean of its divisors is an integer number (10194671443971).

Almost surely, 2^{20389342887941} is an apocalyptic number.

It is an amenable number.

20389342887941 is a deficient number, since it is larger than the sum of its proper divisors (1).

20389342887941 is an equidigital number, since it uses as much as digits as its factorization.

20389342887941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 167215104, while the sum is 68.

The spelling of 20389342887941 in words is "twenty trillion, three hundred eighty-nine billion, three hundred forty-two million, eight hundred eighty-seven thousand, nine hundred forty-one".