104457771805 has 4 divisors (see below), whose sum is σ = 125349326172. Its totient is φ = 83566217440.

The previous prime is 104457771791. The next prime is 104457771827. The reversal of 104457771805 is 508177754401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11079246564 + 93378525241 = 105258^2 + 305579^2 .

It is not a de Polignac number, because 104457771805 - 2²³ = 104449383197 is a prime.

It is a super-2 number, since 2×104457771805² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 10445777176 + ... + 10445777185.

It is an arithmetic number, because the mean of its divisors is an integer number (31337331543).

Almost surely, 2^104457771805 is an apocalyptic number.

It is an amenable number.

104457771805 is a deficient number, since it is larger than the sum of its proper divisors (20891554367).

104457771805 is an equidigital number, since it uses as much as digits as its factorization.

104457771805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20891554366.

The product of its (nonzero) digits is 1097600, while the sum is 49.

The spelling of 104457771805 in words is "one hundred four billion, four hundred fifty-seven million, seven hundred seventy-one thousand, eight hundred five".