20163136291 has 2 divisors, whose sum is σ = 20163136292. Its totient is φ = 20163136290.

The previous prime is 20163136271. The next prime is 20163136309. The reversal of 20163136291 is 19263136102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20163136291 - 2³¹ = 18015652643 is a prime.

It is not a weakly prime, because it can be changed into another prime (20163136241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10081568145 + 10081568146.

It is an arithmetic number, because the mean of its divisors is an integer number (10081568146).

Almost surely, 2^20163136291 is an apocalyptic number.

20163136291 is a deficient number, since it is larger than the sum of its proper divisors (1).

20163136291 is an equidigital number, since it uses as much as digits as its factorization.

20163136291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 20163136291 in words is "twenty billion, one hundred sixty-three million, one hundred thirty-six thousand, two hundred ninety-one".