40324400431440 has 40 divisors (see below), whose sum is σ = 125005641338208. Its totient is φ = 10753173448320.

The previous prime is 40324400431423. The next prime is 40324400431477. The reversal of 40324400431440 is 4413400442304.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84009167326 + ... + 84009167805.

Almost surely, 2^{40324400431440} is an apocalyptic number.

40324400431440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40324400431440 is an abundant number, since it is smaller than the sum of its proper divisors (84681240906768).

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

40324400431440 is a wasteful number, since it uses less digits than its factorization.

40324400431440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168018335147 (or 168018335141 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 40324400431440 its reverse (4413400442304), we get a palindrome (44737800873744).

The spelling of 40324400431440 in words is "forty trillion, three hundred twenty-four billion, four hundred million, four hundred thirty-one thousand, four hundred forty".