40321724440 has 16 divisors (see below), whose sum is σ = 90723880080. Its totient is φ = 16128689760.

The previous prime is 40321724389. The next prime is 40321724467. The reversal of 40321724440 is 4442712304.

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, 504021516 + ... + 504021595.

It is an arithmetic number, because the mean of its divisors is an integer number (5670242505).

Almost surely, 2^40321724440 is an apocalyptic number.

40321724440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40321724440 is an abundant number, since it is smaller than the sum of its proper divisors (50402155640).

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

40321724440 is a wasteful number, since it uses less digits than its factorization.

40321724440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008043122 (or 1008043118 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

The spelling of 40321724440 in words is "forty billion, three hundred twenty-one million, seven hundred twenty-four thousand, four hundred forty".