40104453444 has 144 divisors (see below), whose sum is σ = 106831490304. Its totient is φ = 11691852480.

The previous prime is 40104453437. The next prime is 40104453491. The reversal of 40104453444 is 44435440104.

It is a super-2 number, since 2×40104453444² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4178419 + ... + 4188005.

Almost surely, 2^40104453444 is an apocalyptic number.

40104453444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40104453444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53415745152).

40104453444 is an abundant number, since it is smaller than the sum of its proper divisors (66727036860).

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

40104453444 is a wasteful number, since it uses less digits than its factorization.

40104453444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9726 (or 9713 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 40104453444 its reverse (44435440104), we get a palindrome (84539893548).

The spelling of 40104453444 in words is "forty billion, one hundred four million, four hundred fifty-three thousand, four hundred forty-four".