40808107520 has 80 divisors (see below), whose sum is σ = 97977063888. Its totient is φ = 16301015040.

The previous prime is 40808107513. The next prime is 40808107523. The reversal of 40808107520 is 2570180804.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40808107523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1937687 + ... + 1958633.

Almost surely, 2^40808107520 is an apocalyptic number.

40808107520 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 40808107520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48988531944).

40808107520 is an abundant number, since it is smaller than the sum of its proper divisors (57168956368).

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

40808107520 is an equidigital number, since it uses as much as digits as its factorization.

40808107520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21731 (or 21715 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The spelling of 40808107520 in words is "forty billion, eight hundred eight million, one hundred seven thousand, five hundred twenty".