20978084483 has 2 divisors, whose sum is σ = 20978084484. Its totient is φ = 20978084482.

The previous prime is 20978084453. The next prime is 20978084521. The reversal of 20978084483 is 38448087902.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20978084483 - 2⁸ = 20978084227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20978084443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10489042241 + 10489042242.

It is an arithmetic number, because the mean of its divisors is an integer number (10489042242).

Almost surely, 2^20978084483 is an apocalyptic number.

20978084483 is a deficient number, since it is larger than the sum of its proper divisors (1).

20978084483 is an equidigital number, since it uses as much as digits as its factorization.

20978084483 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 20978084483 in words is "twenty billion, nine hundred seventy-eight million, eighty-four thousand, four hundred eighty-three".