18181887608652 has 48 divisors (see below), whose sum is σ = 42452558971872. Its totient is φ = 6056608481280.

The previous prime is 18181887608641. The next prime is 18181887608671. The reversal of 18181887608652 is 25680678818181.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111080952 + ... + 111244512.

It is an arithmetic number, because the mean of its divisors is an integer number (884428311914).

Almost surely, 2^{18181887608652} is an apocalyptic number.

18181887608652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18181887608652 is an abundant number, since it is smaller than the sum of its proper divisors (24270671363220).

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

18181887608652 is a wasteful number, since it uses less digits than its factorization.

18181887608652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169658 (or 169656 counting only the distinct ones).

The product of its (nonzero) digits is 82575360, while the sum is 69.

The spelling of 18181887608652 in words is "eighteen trillion, one hundred eighty-one billion, eight hundred eighty-seven million, six hundred eight thousand, six hundred fifty-two".