181418426785612 has 12 divisors (see below), whose sum is σ = 317482342512160. Its totient is φ = 90709186067856.

The previous prime is 181418426785559. The next prime is 181418426785649. The reversal of 181418426785612 is 216587624814181.

It is a super-2 number, since 2×181418426785612² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18756478 + ... + 26732794.

Almost surely, 2^{181418426785612} is an apocalyptic number.

It is an amenable number.

181418426785612 is a deficient number, since it is larger than the sum of its proper divisors (136063915726548).

181418426785612 is a wasteful number, since it uses less digits than its factorization.

181418426785612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13662480 (or 13662478 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 64.

The spelling of 181418426785612 in words is "one hundred eighty-one trillion, four hundred eighteen billion, four hundred twenty-six million, seven hundred eighty-five thousand, six hundred twelve".