43812423642 has 32 divisors (see below), whose sum is σ = 95085587520. Its totient is φ = 13377836160.

The previous prime is 43812423637. The next prime is 43812423709. The reversal of 43812423642 is 24632421834.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 43812423642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2133667 + ... + 2154102.

It is an arithmetic number, because the mean of its divisors is an integer number (2971424610).

Almost surely, 2^43812423642 is an apocalyptic number.

43812423642 is an abundant number, since it is smaller than the sum of its proper divisors (51273163878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43812423642 is a wasteful number, since it uses less digits than its factorization.

43812423642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287918.

The product of its digits is 221184, while the sum is 39.

The spelling of 43812423642 in words is "forty-three billion, eight hundred twelve million, four hundred twenty-three thousand, six hundred forty-two".