2163920086091 has 2 divisors, whose sum is σ = 2163920086092. Its totient is φ = 2163920086090.

The previous prime is 2163920086051. The next prime is 2163920086117. The reversal of 2163920086091 is 1906800293612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2163920086091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2163920086021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081960043045 + 1081960043046.

It is an arithmetic number, because the mean of its divisors is an integer number (1081960043046).

Almost surely, 2^{2163920086091} is an apocalyptic number.

2163920086091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163920086091 is an equidigital number, since it uses as much as digits as its factorization.

2163920086091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 2163920086091 in words is "two trillion, one hundred sixty-three billion, nine hundred twenty million, eighty-six thousand, ninety-one".