18470817212 has 48 divisors (see below), whose sum is σ = 33671514240. Its totient is φ = 8858253312.

The previous prime is 18470817179. The next prime is 18470817247. The reversal of 18470817212 is 21271807481.

It is a self number, because there is not a number n which added to its sum of digits gives 18470817212.

It is a congruent number.

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, 3859373 + ... + 3864155.

It is an arithmetic number, because the mean of its divisors is an integer number (701489880).

Almost surely, 2^18470817212 is an apocalyptic number.

It is an amenable number.

18470817212 is a deficient number, since it is larger than the sum of its proper divisors (15200697028).

18470817212 is a wasteful number, since it uses less digits than its factorization.

18470817212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190 (or 5188 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 41.

The spelling of 18470817212 in words is "eighteen billion, four hundred seventy million, eight hundred seventeen thousand, two hundred twelve".