40021683843 has 8 divisors (see below), whose sum is σ = 53365747456. Its totient is φ = 26679371400.

The previous prime is 40021683841. The next prime is 40021683857. The reversal of 40021683843 is 34838612004.

It is a happy number.

40021683843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40021683843 - 2¹ = 40021683841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40021683841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383503 + ... + 476568.

It is an arithmetic number, because the mean of its divisors is an integer number (6670718432).

Almost surely, 2^40021683843 is an apocalyptic number.

40021683843 is a deficient number, since it is larger than the sum of its proper divisors (13344063613).

40021683843 is a wasteful number, since it uses less digits than its factorization.

40021683843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875585.

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 40021683843 in words is "forty billion, twenty-one million, six hundred eighty-three thousand, eight hundred forty-three".