40510032320 has 56 divisors (see below), whose sum is σ = 96641283984. Its totient is φ = 16174319616.

The previous prime is 40510032317. The next prime is 40510032337. The reversal of 40510032320 is 2323001504.

It is a happy number.

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 = 40510032292 and 40510032301.

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, 59324 + ... + 290756.

It is an arithmetic number, because the mean of its divisors is an integer number (1725737214).

Almost surely, 2^40510032320 is an apocalyptic number.

40510032320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40510032320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48320641992).

40510032320 is an abundant number, since it is smaller than the sum of its proper divisors (56131251664).

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

40510032320 is a wasteful number, since it uses less digits than its factorization.

40510032320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231997 (or 231987 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 40510032320 its reverse (2323001504), we get a palindrome (42833033824).

The spelling of 40510032320 in words is "forty billion, five hundred ten million, thirty-two thousand, three hundred twenty".