40558219818 has 32 divisors (see below), whose sum is σ = 81320177664. Its totient is φ = 13485491712.

The previous prime is 40558219799. The next prime is 40558219847. The reversal of 40558219818 is 81891285504.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 4797271 + ... + 4805717.

It is an arithmetic number, because the mean of its divisors is an integer number (2541255552).

Almost surely, 2^40558219818 is an apocalyptic number.

40558219818 is an abundant number, since it is smaller than the sum of its proper divisors (40761957846).

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

40558219818 is a wasteful number, since it uses less digits than its factorization.

40558219818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10366.

The product of its (nonzero) digits is 921600, while the sum is 51.

The spelling of 40558219818 in words is "forty billion, five hundred fifty-eight million, two hundred nineteen thousand, eight hundred eighteen".