20581080983 has 2 divisors, whose sum is σ = 20581080984. Its totient is φ = 20581080982.

The previous prime is 20581080977. The next prime is 20581081019. The reversal of 20581080983 is 38908018502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20581080983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20581085983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10290540491 + 10290540492.

It is an arithmetic number, because the mean of its divisors is an integer number (10290540492).

Almost surely, 2^20581080983 is an apocalyptic number.

20581080983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20581080983 is an equidigital number, since it uses as much as digits as its factorization.

20581080983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 20581080983 in words is "twenty billion, five hundred eighty-one million, eighty thousand, nine hundred eighty-three".