20212616579 has 2 divisors, whose sum is σ = 20212616580. Its totient is φ = 20212616578.

The previous prime is 20212616551. The next prime is 20212616587. The reversal of 20212616579 is 97561621202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212616579 - 2²⁸ = 19944181123 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212616779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106308289 + 10106308290.

It is an arithmetic number, because the mean of its divisors is an integer number (10106308290).

Almost surely, 2^20212616579 is an apocalyptic number.

20212616579 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212616579 is an equidigital number, since it uses as much as digits as its factorization.

20212616579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 20212616579 in words is "twenty billion, two hundred twelve million, six hundred sixteen thousand, five hundred seventy-nine".