105450440891 has 2 divisors, whose sum is σ = 105450440892. Its totient is φ = 105450440890.

The previous prime is 105450440881. The next prime is 105450440911. The reversal of 105450440891 is 198044054501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105450440891 is a prime.

It is a super-2 number, since 2×105450440891² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105450440831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52725220445 + 52725220446.

It is an arithmetic number, because the mean of its divisors is an integer number (52725220446).

Almost surely, 2^105450440891 is an apocalyptic number.

105450440891 is a deficient number, since it is larger than the sum of its proper divisors (1).

105450440891 is an equidigital number, since it uses as much as digits as its factorization.

105450440891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 105450440891 in words is "one hundred five billion, four hundred fifty million, four hundred forty thousand, eight hundred ninety-one".