818422013504 has 28 divisors (see below), whose sum is σ = 1709532826800. Its totient is φ = 387673584768.

The previous prime is 818422013501. The next prime is 818422013531. The reversal of 818422013504 is 405310224818.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (818422013501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336520994 + ... + 336523425.

Almost surely, 2^818422013504 is an apocalyptic number.

It is an amenable number.

818422013504 is an abundant number, since it is smaller than the sum of its proper divisors (891110813296).

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

818422013504 is a wasteful number, since it uses less digits than its factorization.

818422013504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673044450 (or 673044440 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 818422013504 in words is "eight hundred eighteen billion, four hundred twenty-two million, thirteen thousand, five hundred four".