20587882163 has 2 divisors, whose sum is σ = 20587882164. Its totient is φ = 20587882162.

The previous prime is 20587882157. The next prime is 20587882247. The reversal of 20587882163 is 36128878502.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20587882163 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20587882123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10293941081 + 10293941082.

It is an arithmetic number, because the mean of its divisors is an integer number (10293941082).

Almost surely, 2^20587882163 is an apocalyptic number.

20587882163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20587882163 is an equidigital number, since it uses as much as digits as its factorization.

20587882163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 20587882163 in words is "twenty billion, five hundred eighty-seven million, eight hundred eighty-two thousand, one hundred sixty-three".