20541530579 has 2 divisors, whose sum is σ = 20541530580. Its totient is φ = 20541530578.

The previous prime is 20541530573. The next prime is 20541530701. The reversal of 20541530579 is 97503514502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20541530579 - 2⁴ = 20541530563 is a prime.

It is not a weakly prime, because it can be changed into another prime (20541530573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270765289 + 10270765290.

It is an arithmetic number, because the mean of its divisors is an integer number (10270765290).

Almost surely, 2^20541530579 is an apocalyptic number.

20541530579 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541530579 is an equidigital number, since it uses as much as digits as its factorization.

20541530579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 41.

The spelling of 20541530579 in words is "twenty billion, five hundred forty-one million, five hundred thirty thousand, five hundred seventy-nine".