40044002040 has 96 divisors (see below), whose sum is σ = 148734874080. Its totient is φ = 9152914176.

The previous prime is 40044002017. The next prime is 40044002101. The reversal of 40044002040 is 4020044004.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7942719 + ... + 7947758.

It is an arithmetic number, because the mean of its divisors is an integer number (1549321605).

Almost surely, 2^40044002040 is an apocalyptic number.

40044002040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40044002040 is an abundant number, since it is smaller than the sum of its proper divisors (108690872040).

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

40044002040 is a wasteful number, since it uses less digits than its factorization.

40044002040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15890501 (or 15890494 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 40044002040 its reverse (4020044004), we get a palindrome (44064046044).

The spelling of 40044002040 in words is "forty billion, forty-four million, two thousand, forty", and thus it is an eban number.