8456434186091 has 2 divisors, whose sum is σ = 8456434186092. Its totient is φ = 8456434186090.

The previous prime is 8456434186073. The next prime is 8456434186111. The reversal of 8456434186091 is 1906814346548.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8456434186091 - 2⁶ = 8456434186027 is a prime.

It is a super-2 number, since 2×8456434186091² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8456434186091.

It is not a weakly prime, because it can be changed into another prime (8456434186021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4228217093045 + 4228217093046.

It is an arithmetic number, because the mean of its divisors is an integer number (4228217093046).

Almost surely, 2^{8456434186091} is an apocalyptic number.

8456434186091 is a deficient number, since it is larger than the sum of its proper divisors (1).

8456434186091 is an equidigital number, since it uses as much as digits as its factorization.

8456434186091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19906560, while the sum is 59.

The spelling of 8456434186091 in words is "eight trillion, four hundred fifty-six billion, four hundred thirty-four million, one hundred eighty-six thousand, ninety-one".