40013200044 has 60 divisors (see below), whose sum is σ = 106035381144. Its totient is φ = 13155016896.

The previous prime is 40013200021. The next prime is 40013200057. The reversal of 40013200044 is 44000231004.

It is a super-2 number, since 2×40013200044² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 19 ways as a sum of consecutive naturals, for example, 822222 + ... + 869525.

Almost surely, 2^40013200044 is an apocalyptic number.

It is an amenable number.

40013200044 is an abundant number, since it is smaller than the sum of its proper divisors (66022181100).

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

40013200044 is a wasteful number, since it uses less digits than its factorization.

40013200044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691836 (or 1691825 counting only the distinct ones).

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

Adding to 40013200044 its reverse (44000231004), we get a palindrome (84013431048).

The spelling of 40013200044 in words is "forty billion, thirteen million, two hundred thousand, forty-four".