40401433144 has 16 divisors (see below), whose sum is σ = 75928453920. Its totient is φ = 20153845440.

The previous prime is 40401433129. The next prime is 40401433223. The reversal of 40401433144 is 44133410404.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5855229 + ... + 5862124.

It is an arithmetic number, because the mean of its divisors is an integer number (4745528370).

Almost surely, 2^40401433144 is an apocalyptic number.

It is an amenable number.

40401433144 is a deficient number, since it is larger than the sum of its proper divisors (35527020776).

40401433144 is a wasteful number, since it uses less digits than its factorization.

40401433144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11717790 (or 11717786 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 40401433144 its reverse (44133410404), we get a palindrome (84534843548).

The spelling of 40401433144 in words is "forty billion, four hundred one million, four hundred thirty-three thousand, one hundred forty-four".