20079564511 has 2 divisors, whose sum is σ = 20079564512. Its totient is φ = 20079564510.

The previous prime is 20079564509. The next prime is 20079564539. The reversal of 20079564511 is 11546597002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20079564511 - 2¹ = 20079564509 is a prime.

Together with 20079564509, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20079564611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10039782255 + 10039782256.

It is an arithmetic number, because the mean of its divisors is an integer number (10039782256).

Almost surely, 2^20079564511 is an apocalyptic number.

20079564511 is a deficient number, since it is larger than the sum of its proper divisors (1).

20079564511 is an equidigital number, since it uses as much as digits as its factorization.

20079564511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 20079564511 in words is "twenty billion, seventy-nine million, five hundred sixty-four thousand, five hundred eleven".