18263795712 has 96 divisors (see below), whose sum is σ = 49879851840. Its totient is φ = 5939363840.

The previous prime is 18263795687. The next prime is 18263795717. The reversal of 18263795712 is 21759736281.

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

It is not an unprimeable number, because it can be changed into a prime (18263795717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215653 + ... + 288155.

It is an arithmetic number, because the mean of its divisors is an integer number (519581790).

Almost surely, 2^18263795712 is an apocalyptic number.

18263795712 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 18263795712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24939925920).

18263795712 is an abundant number, since it is smaller than the sum of its proper divisors (31616056128).

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

18263795712 is an equidigital number, since it uses as much as digits as its factorization.

18263795712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72569 (or 72549 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 51.

The spelling of 18263795712 in words is "eighteen billion, two hundred sixty-three million, seven hundred ninety-five thousand, seven hundred twelve".