40320424320 has 128 divisors (see below), whose sum is σ = 140205185280. Its totient is φ = 9774643200.

The previous prime is 40320424307. The next prime is 40320424349. The reversal of 40320424320 is 2342402304.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 933436 + ... + 975675.

It is an arithmetic number, because the mean of its divisors is an integer number (1095353010).

Almost surely, 2^40320424320 is an apocalyptic number.

40320424320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40320424320 is an abundant number, since it is smaller than the sum of its proper divisors (99884760960).

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

40320424320 is a wasteful number, since it uses less digits than its factorization.

40320424320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909144 (or 1909132 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 40320424320 its reverse (2342402304), we get a palindrome (42662826624).

The spelling of 40320424320 in words is "forty billion, three hundred twenty million, four hundred twenty-four thousand, three hundred twenty".