42845691586 has 16 divisors (see below), whose sum is σ = 65486530584. Its totient is φ = 21019889664.

The previous prime is 42845691563. The next prime is 42845691643. The reversal of 42845691586 is 68519654824.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18437566225 + 24408125361 = 135785^2 + 156231^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42845691586.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732091 + ... + 788446.

Almost surely, 2^42845691586 is an apocalyptic number.

42845691586 is a deficient number, since it is larger than the sum of its proper divisors (22640838998).

42845691586 is a wasteful number, since it uses less digits than its factorization.

42845691586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520805.

The product of its digits is 16588800, while the sum is 58.

The spelling of 42845691586 in words is "forty-two billion, eight hundred forty-five million, six hundred ninety-one thousand, five hundred eighty-six".