18170278272 has 96 divisors (see below), whose sum is σ = 52473877560. Its totient is φ = 6035097600.

The previous prime is 18170278253. The next prime is 18170278289. The reversal of 18170278272 is 27287207181.

It is a tau number, because it is divible by the number of its divisors (96).

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, 295647 + ... + 351777.

Almost surely, 2^18170278272 is an apocalyptic number.

18170278272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18170278272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26236938780).

18170278272 is an abundant number, since it is smaller than the sum of its proper divisors (34303599288).

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

18170278272 is a wasteful number, since it uses less digits than its factorization.

18170278272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56432 (or 56417 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 45.

The spelling of 18170278272 in words is "eighteen billion, one hundred seventy million, two hundred seventy-eight thousand, two hundred seventy-two".