40808080920 has 64 divisors (see below), whose sum is σ = 122470938720. Its totient is φ = 10878004224.

The previous prime is 40808080909. The next prime is 40808080921. The reversal of 40808080920 is 2908080804.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40808080921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257724 + ... + 384756.

Almost surely, 2^40808080920 is an apocalyptic number.

40808080920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40808080920 is an abundant number, since it is smaller than the sum of its proper divisors (81662857800).

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

40808080920 is a wasteful number, since it uses less digits than its factorization.

40808080920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129724 (or 129720 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 40808080920 in words is "forty billion, eight hundred eight million, eighty thousand, nine hundred twenty".