40144331412 has 72 divisors (see below), whose sum is σ = 107030064960. Its totient is φ = 12651845760.

The previous prime is 40144331411. The next prime is 40144331419. The reversal of 40144331412 is 21413344104.

It is a super-2 number, since 2×40144331412² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40144331411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285712 + ... + 402392.

It is an arithmetic number, because the mean of its divisors is an integer number (1486528680).

Almost surely, 2^40144331412 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 40144331412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53515032480).

40144331412 is an abundant number, since it is smaller than the sum of its proper divisors (66885733548).

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

40144331412 is a wasteful number, since it uses less digits than its factorization.

40144331412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117213 (or 117208 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 40144331412 its reverse (21413344104), we get a palindrome (61557675516).

The spelling of 40144331412 in words is "forty billion, one hundred forty-four million, three hundred thirty-one thousand, four hundred twelve".