40432144020 has 96 divisors (see below), whose sum is σ = 119255431680. Its totient is φ = 10206979200.

The previous prime is 40432144003. The next prime is 40432144073. The reversal of 40432144020 is 2044123404.

It is a happy number.

40432144020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1641919 + ... + 1666361.

It is an arithmetic number, because the mean of its divisors is an integer number (1242244080).

Almost surely, 2^40432144020 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 40432144020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59627715840).

40432144020 is an abundant number, since it is smaller than the sum of its proper divisors (78823287660).

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

40432144020 is a wasteful number, since it uses less digits than its factorization.

40432144020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25925 (or 25923 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 40432144020 its reverse (2044123404), we get a palindrome (42476267424).

The spelling of 40432144020 in words is "forty billion, four hundred thirty-two million, one hundred forty-four thousand, twenty".