18368127680 has 112 divisors (see below), whose sum is σ = 51150316800. Its totient is φ = 6151154688.

The previous prime is 18368127643. The next prime is 18368127709. The reversal of 18368127680 is 8672186381.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×18368127680² (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 15 ways as a sum of consecutive naturals, for example, 971 + ... + 191669.

Almost surely, 2^18368127680 is an apocalyptic number.

18368127680 is a gapful number since it is divisible by the number (10) 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 18368127680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25575158400).

18368127680 is an abundant number, since it is smaller than the sum of its proper divisors (32782189120).

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

18368127680 is a wasteful number, since it uses less digits than its factorization.

18368127680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190766 (or 190756 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 18368127680 in words is "eighteen billion, three hundred sixty-eight million, one hundred twenty-seven thousand, six hundred eighty".