40605855880 has 32 divisors (see below), whose sum is σ = 91454903640. Its totient is φ = 16226035200.

The previous prime is 40605855859. The next prime is 40605855949. The reversal of 40605855880 is 8855850604.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29042294724 + 11563561156 = 170418^2 + 107534^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 469221 + ... + 548980.

Almost surely, 2^40605855880 is an apocalyptic number.

40605855880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40605855880 is an abundant number, since it is smaller than the sum of its proper divisors (50849047760).

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

40605855880 is a wasteful number, since it uses less digits than its factorization.

40605855880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019209 (or 1019205 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 49.

The spelling of 40605855880 in words is "forty billion, six hundred five million, eight hundred fifty-five thousand, eight hundred eighty".