42743995893 has 20 divisors (see below), whose sum is σ = 63857776620. Its totient is φ = 28493482752.

The previous prime is 42743995771. The next prime is 42743995901. The reversal of 42743995893 is 39859934724.

42743995893 is a `hidden beast` number, since 4 + 2 + 7 + 43 + 9 + 9 + 589 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15374264049 + 27369731844 = 123993^2 + 165438^2 .

It is not a de Polignac number, because 42743995893 - 2²⁵ = 42710441461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42743995893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42743995093) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1565071 + ... + 1592147.

It is an arithmetic number, because the mean of its divisors is an integer number (3192888831).

Almost surely, 2^42743995893 is an apocalyptic number.

It is an amenable number.

42743995893 is a deficient number, since it is larger than the sum of its proper divisors (21113780727).

42743995893 is a wasteful number, since it uses less digits than its factorization.

42743995893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46578 (or 46569 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The spelling of 42743995893 in words is "forty-two billion, seven hundred forty-three million, nine hundred ninety-five thousand, eight hundred ninety-three".