20287862941 has 2 divisors, whose sum is σ = 20287862942. Its totient is φ = 20287862940.

The previous prime is 20287862939. The next prime is 20287863041. The reversal of 20287862941 is 14926878202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20279184025 + 8678916 = 142405^2 + 2946^2 .

It is a cyclic number.

It is not a de Polignac number, because 20287862941 - 2¹ = 20287862939 is a prime.

Together with 20287862939, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20287862341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10143931470 + 10143931471.

It is an arithmetic number, because the mean of its divisors is an integer number (10143931471).

Almost surely, 2^20287862941 is an apocalyptic number.

It is an amenable number.

20287862941 is a deficient number, since it is larger than the sum of its proper divisors (1).

20287862941 is an equidigital number, since it uses as much as digits as its factorization.

20287862941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 20287862941 in words is "twenty billion, two hundred eighty-seven million, eight hundred sixty-two thousand, nine hundred forty-one".