40232320040 has 32 divisors (see below), whose sum is σ = 98752059360. Its totient is φ = 14629934400.

The previous prime is 40232320019. The next prime is 40232320069. The reversal of 40232320040 is 4002323204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 40232319994 and 40232320021.

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, 45718106 + ... + 45718985.

It is an arithmetic number, because the mean of its divisors is an integer number (3086001855).

Almost surely, 2^40232320040 is an apocalyptic number.

40232320040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40232320040 is an abundant number, since it is smaller than the sum of its proper divisors (58519739320).

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

40232320040 is a wasteful number, since it uses less digits than its factorization.

40232320040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91437113 (or 91437109 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 40232320040 its reverse (4002323204), we get a palindrome (44234643244).

The spelling of 40232320040 in words is "forty billion, two hundred thirty-two million, three hundred twenty thousand, forty".