40033324840 has 16 divisors (see below), whose sum is σ = 90074980980. Its totient is φ = 16013329920.

The previous prime is 40033324829. The next prime is 40033324841. The reversal of 40033324840 is 4842333004.

It can be written as a sum of positive squares in 2 ways, for example, as 38792453764 + 1240871076 = 196958^2 + 35226^2 .

It is a super-2 number, since 2×40033324840² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40033324841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500416521 + ... + 500416600.

Almost surely, 2^40033324840 is an apocalyptic number.

40033324840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40033324840 is an abundant number, since it is smaller than the sum of its proper divisors (50041656140).

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

40033324840 is a wasteful number, since it uses less digits than its factorization.

40033324840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000833132 (or 1000833128 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 40033324840 its reverse (4842333004), we get a palindrome (44875657844).

The spelling of 40033324840 in words is "forty billion, thirty-three million, three hundred twenty-four thousand, eight hundred forty".