40518885816 has 48 divisors (see below), whose sum is σ = 109993347360. Its totient is φ = 13474947840.

The previous prime is 40518885779. The next prime is 40518885821. The reversal of 40518885816 is 61858881504.

40518885816 is a `hidden beast` number, since 4 + 0 + 51 + 8 + 8 + 8 + 581 + 6 = 666.

40518885816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 621825 + ... + 683888.

It is an arithmetic number, because the mean of its divisors is an integer number (2291528070).

Almost surely, 2^40518885816 is an apocalyptic number.

It is an amenable number.

40518885816 is an abundant number, since it is smaller than the sum of its proper divisors (69474461544).

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

40518885816 is a wasteful number, since it uses less digits than its factorization.

40518885816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306156 (or 1306149 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 54.

The spelling of 40518885816 in words is "forty billion, five hundred eighteen million, eight hundred eighty-five thousand, eight hundred sixteen".