20604523579 has 2 divisors, whose sum is σ = 20604523580. Its totient is φ = 20604523578.

The previous prime is 20604523559. The next prime is 20604523631. The reversal of 20604523579 is 97532540602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20604523579 - 2²⁵ = 20570969147 is a prime.

It is not a weakly prime, because it can be changed into another prime (20604523529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10302261789 + 10302261790.

It is an arithmetic number, because the mean of its divisors is an integer number (10302261790).

Almost surely, 2^20604523579 is an apocalyptic number.

20604523579 is a deficient number, since it is larger than the sum of its proper divisors (1).

20604523579 is an equidigital number, since it uses as much as digits as its factorization.

20604523579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 20604523579 in words is "twenty billion, six hundred four million, five hundred twenty-three thousand, five hundred seventy-nine".