40518885867 has 16 divisors (see below), whose sum is σ = 54430620192. Its totient is φ = 26809952000.

The previous prime is 40518885859. The next prime is 40518885871. The reversal of 40518885867 is 76858881504.

It is a cyclic number.

It is not a de Polignac number, because 40518885867 - 2³ = 40518885859 is a prime.

It is a super-2 number, since 2×40518885867² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40518885867.

It is not an unprimeable number, because it can be changed into a prime (40518885167) 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, 3488113 + ... + 3499709.

It is an arithmetic number, because the mean of its divisors is an integer number (3401913762).

Almost surely, 2^40518885867 is an apocalyptic number.

40518885867 is a deficient number, since it is larger than the sum of its proper divisors (13911734325).

40518885867 is a wasteful number, since it uses less digits than its factorization.

40518885867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20238.

The product of its (nonzero) digits is 17203200, while the sum is 60.

The spelling of 40518885867 in words is "forty billion, five hundred eighteen million, eight hundred eighty-five thousand, eight hundred sixty-seven".