18069819964 has 36 divisors (see below), whose sum is σ = 38721050760. Its totient is φ = 7336617120.

The previous prime is 18069819959. The next prime is 18069820003. The reversal of 18069819964 is 46991896081.

It is a super-2 number, since 2×18069819964² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2422407 + ... + 2429854.

Almost surely, 2^18069819964 is an apocalyptic number.

18069819964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18069819964 is an abundant number, since it is smaller than the sum of its proper divisors (20651230796).

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

18069819964 is a wasteful number, since it uses less digits than its factorization.

18069819964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852298 (or 4852289 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 61.

The spelling of 18069819964 in words is "eighteen billion, sixty-nine million, eight hundred nineteen thousand, nine hundred sixty-four".