40488040840 has 32 divisors (see below), whose sum is σ = 98105638680. Its totient is φ = 14949430272.

The previous prime is 40488040781. The next prime is 40488040877. The reversal of 40488040840 is 4804088404.

It can be written as a sum of positive squares in 4 ways, for example, as 25919068036 + 14568972804 = 160994^2 + 120702^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 40488040793 and 40488040802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38930289 + ... + 38931328.

Almost surely, 2^40488040840 is an apocalyptic number.

40488040840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40488040840 is an abundant number, since it is smaller than the sum of its proper divisors (57617597840).

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

40488040840 is a wasteful number, since it uses less digits than its factorization.

40488040840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77861641 (or 77861637 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The spelling of 40488040840 in words is "forty billion, four hundred eighty-eight million, forty thousand, eight hundred forty".