4081818564718 has 16 divisors (see below), whose sum is σ = 6223219125984. Its totient is φ = 2007413465760.

The previous prime is 4081818564713. The next prime is 4081818564737. The reversal of 4081818564718 is 8174658181804.

It is a super-2 number, since 2×4081818564718² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4081818564713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6741471 + ... + 7321957.

It is an arithmetic number, because the mean of its divisors is an integer number (388951195374).

Almost surely, 2^{4081818564718} is an apocalyptic number.

4081818564718 is a deficient number, since it is larger than the sum of its proper divisors (2141400561266).

4081818564718 is a wasteful number, since it uses less digits than its factorization.

4081818564718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638187.

The product of its (nonzero) digits is 13762560, while the sum is 61.

The spelling of 4081818564718 in words is "four trillion, eighty-one billion, eight hundred eighteen million, five hundred sixty-four thousand, seven hundred eighteen".