40020440004002 has 8 divisors (see below), whose sum is σ = 60160878358812. Its totient is φ = 19966813884400.

The previous prime is 40020440003987. The next prime is 40020440004029. The reversal of 40020440004002 is 20040004402004.

It can be written as a sum of positive squares in 2 ways, for example, as 38214638876401 + 1805801127601 = 6181799^2 + 1343801^2 .

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

It is a super-2 number, since 2×40020440004002² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21703057649 + ... + 21703059492.

Almost surely, 2^{40020440004002} is an apocalyptic number.

40020440004002 is a deficient number, since it is larger than the sum of its proper divisors (20140438354810).

40020440004002 is a wasteful number, since it uses less digits than its factorization.

40020440004002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43406117604.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40020440004002 its reverse (20040004402004), we get a palindrome (60060444406006).

It can be divided in two parts, 400 and 20440004002, that added together give a palindrome (20440004402).

The spelling of 40020440004002 in words is "forty trillion, twenty billion, four hundred forty million, four thousand, two".