40008044880 has 140 divisors (see below), whose sum is σ = 139464460980. Its totient is φ = 10668796416.

The previous prime is 40008044809. The next prime is 40008044891. The reversal of 40008044880 is 8844080004.

It can be written as a sum of positive squares in 2 ways, for example, as 13130409744 + 26877635136 = 114588^2 + 163944^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 284685 + ... + 401324.

Almost surely, 2^40008044880 is an apocalyptic number.

40008044880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40008044880 is an abundant number, since it is smaller than the sum of its proper divisors (99456416100).

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

40008044880 is an equidigital number, since it uses as much as digits as its factorization.

40008044880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686040 (or 686019 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The spelling of 40008044880 in words is "forty billion, eight million, forty-four thousand, eight hundred eighty".