20959297367 has 2 divisors, whose sum is σ = 20959297368. Its totient is φ = 20959297366.

The previous prime is 20959297357. The next prime is 20959297391. The reversal of 20959297367 is 76379295902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20959297367 - 2⁴ = 20959297351 is a prime.

It is a super-2 number, since 2×20959297367² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20959297327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10479648683 + 10479648684.

It is an arithmetic number, because the mean of its divisors is an integer number (10479648684).

Almost surely, 2^20959297367 is an apocalyptic number.

20959297367 is a deficient number, since it is larger than the sum of its proper divisors (1).

20959297367 is an equidigital number, since it uses as much as digits as its factorization.

20959297367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12859560, while the sum is 59.

The spelling of 20959297367 in words is "twenty billion, nine hundred fifty-nine million, two hundred ninety-seven thousand, three hundred sixty-seven".