20967117079 has 2 divisors, whose sum is σ = 20967117080. Its totient is φ = 20967117078.

The previous prime is 20967117077. The next prime is 20967117103. The reversal of 20967117079 is 97071176902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20967117079 - 2¹ = 20967117077 is a prime.

Together with 20967117077, 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 (20967117071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10483558539 + 10483558540.

It is an arithmetic number, because the mean of its divisors is an integer number (10483558540).

Almost surely, 2^20967117079 is an apocalyptic number.

20967117079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20967117079 is an equidigital number, since it uses as much as digits as its factorization.

20967117079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 333396, while the sum is 49.

The spelling of 20967117079 in words is "twenty billion, nine hundred sixty-seven million, one hundred seventeen thousand, seventy-nine".