20040133444 has 12 divisors (see below), whose sum is σ = 35125816768. Its totient is φ = 10004185800.

The previous prime is 20040133417. The next prime is 20040133459. The reversal of 20040133444 is 44433104002.

It is a super-2 number, since 2×20040133444² (a number of 21 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, 3967392 + ... + 3972439.

Almost surely, 2^20040133444 is an apocalyptic number.

It is an amenable number.

20040133444 is a deficient number, since it is larger than the sum of its proper divisors (15085683324).

20040133444 is a wasteful number, since it uses less digits than its factorization.

20040133444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940466 (or 7940464 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20040133444 its reverse (44433104002), we get a palindrome (64473237446).

The spelling of 20040133444 in words is "twenty billion, forty million, one hundred thirty-three thousand, four hundred forty-four".