40043802818 has 16 divisors (see below), whose sum is σ = 60555162624. Its totient is φ = 19858834800.

The previous prime is 40043802809. The next prime is 40043802829. The reversal of 40043802818 is 81820834004.

It is a super-2 number, since 2×40043802818² (a number of 22 digits) contains 22 as substring.

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, 1009496 + ... + 1048412.

It is an arithmetic number, because the mean of its divisors is an integer number (3784697664).

Almost surely, 2^40043802818 is an apocalyptic number.

40043802818 is a deficient number, since it is larger than the sum of its proper divisors (20511359806).

40043802818 is a wasteful number, since it uses less digits than its factorization.

40043802818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43097.

The product of its (nonzero) digits is 49152, while the sum is 38.

The spelling of 40043802818 in words is "forty billion, forty-three million, eight hundred two thousand, eight hundred eighteen".