818637080068 has 24 divisors (see below), whose sum is σ = 1440047327264. Its totient is φ = 407196720000.

The previous prime is 818637080057. The next prime is 818637080197. The reversal of 818637080068 is 860080736818.

It is a super-2 number, since 2×818637080068² (a number of 25 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, 1684396 + ... + 2115292.

Almost surely, 2^818637080068 is an apocalyptic number.

It is an amenable number.

818637080068 is a deficient number, since it is larger than the sum of its proper divisors (621410247196).

818637080068 is a wasteful number, since it uses less digits than its factorization.

818637080068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433363 (or 433361 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 818637080068 in words is "eight hundred eighteen billion, six hundred thirty-seven million, eighty thousand, sixty-eight".