40404420024 has 64 divisors (see below), whose sum is σ = 104186852640. Its totient is φ = 13047828480.

The previous prime is 40404420011. The next prime is 40404420031. The reversal of 40404420024 is 42002440404.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 40404419976 and 40404420003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109264 + ... + 304544.

Almost surely, 2^40404420024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40404420024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52093426320).

40404420024 is an abundant number, since it is smaller than the sum of its proper divisors (63782432616).

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

40404420024 is a wasteful number, since it uses less digits than its factorization.

40404420024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195560 (or 195556 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 40404420024 its reverse (42002440404), we get a palindrome (82406860428).

The spelling of 40404420024 in words is "forty billion, four hundred four million, four hundred twenty thousand, twenty-four".