2167815491111 has 2 divisors, whose sum is σ = 2167815491112. Its totient is φ = 2167815491110.

The previous prime is 2167815491089. The next prime is 2167815491113. The reversal of 2167815491111 is 1111945187612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2167815491111 - 2¹⁸ = 2167815228967 is a prime.

It is a super-2 number, since 2×2167815491111² (a number of 25 digits) contains 22 as substring.

Together with 2167815491113, 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 (2167815491113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083907745555 + 1083907745556.

It is an arithmetic number, because the mean of its divisors is an integer number (1083907745556).

Almost surely, 2^{2167815491111} is an apocalyptic number.

2167815491111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167815491111 is an equidigital number, since it uses as much as digits as its factorization.

2167815491111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 47.

The spelling of 2167815491111 in words is "two trillion, one hundred sixty-seven billion, eight hundred fifteen million, four hundred ninety-one thousand, one hundred eleven".