20567356319 has 2 divisors, whose sum is σ = 20567356320. Its totient is φ = 20567356318.

The previous prime is 20567356253. The next prime is 20567356321. The reversal of 20567356319 is 91365376502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20567356319 is a prime.

It is a super-2 number, since 2×20567356319² (a number of 21 digits) contains 22 as substring.

Together with 20567356321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20567356219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10283678159 + 10283678160.

It is an arithmetic number, because the mean of its divisors is an integer number (10283678160).

Almost surely, 2^20567356319 is an apocalyptic number.

20567356319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20567356319 is an equidigital number, since it uses as much as digits as its factorization.

20567356319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1020600, while the sum is 47.

The spelling of 20567356319 in words is "twenty billion, five hundred sixty-seven million, three hundred fifty-six thousand, three hundred nineteen".