18085266412 has 12 divisors (see below), whose sum is σ = 31712140656. Its totient is φ = 9024654800.

The previous prime is 18085266361. The next prime is 18085266427. The reversal of 18085266412 is 21466258081.

It is a super-2 number, since 2×18085266412² (a number of 21 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, 4492339 + ... + 4496362.

It is an arithmetic number, because the mean of its divisors is an integer number (2642678388).

Almost surely, 2^18085266412 is an apocalyptic number.

It is an amenable number.

18085266412 is a deficient number, since it is larger than the sum of its proper divisors (13626874244).

18085266412 is a wasteful number, since it uses less digits than its factorization.

18085266412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8989208 (or 8989206 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 18085266412 in words is "eighteen billion, eighty-five million, two hundred sixty-six thousand, four hundred twelve".