40002001443 has 32 divisors (see below), whose sum is σ = 62578329600. Its totient is φ = 25184621088.

The previous prime is 40002001439. The next prime is 40002001477. The reversal of 40002001443 is 34410020004.

It is not a de Polignac number, because 40002001443 - 2² = 40002001439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40002001423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39630 + ... + 285612.

It is an arithmetic number, because the mean of its divisors is an integer number (1955572800).

Almost surely, 2^40002001443 is an apocalyptic number.

40002001443 is a deficient number, since it is larger than the sum of its proper divisors (22576328157).

40002001443 is a wasteful number, since it uses less digits than its factorization.

40002001443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246328 (or 246322 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 40002001443 its reverse (34410020004), we get a palindrome (74412021447).

The spelling of 40002001443 in words is "forty billion, two million, one thousand, four hundred forty-three".