1705113243891 has 12 divisors (see below), whose sum is σ = 2467877113000. Its totient is φ = 1134464119200.

The previous prime is 1705113243887. The next prime is 1705113243989. The reversal of 1705113243891 is 1983423115071.

1705113243891 is a `hidden beast` number, since 1 + 7 + 0 + 511 + 3 + 2 + 43 + 8 + 91 = 666.

It is not a de Polignac number, because 1705113243891 - 2² = 1705113243887 is a prime.

It is a super-2 number, since 2×1705113243891² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1705113243791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189832210 + ... + 189841191.

Almost surely, 2^{1705113243891} is an apocalyptic number.

1705113243891 is a deficient number, since it is larger than the sum of its proper divisors (762763869109).

1705113243891 is a wasteful number, since it uses less digits than its factorization.

1705113243891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379673906 (or 379673903 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 1705113243891 in words is "one trillion, seven hundred five billion, one hundred thirteen million, two hundred forty-three thousand, eight hundred ninety-one".