18551068480 has 112 divisors (see below), whose sum is σ = 51438291840. Its totient is φ = 6240319488.

The previous prime is 18551068477. The next prime is 18551068499. The reversal of 18551068480 is 8486015581.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18551068480.

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, 40591 + ... + 196849.

Almost surely, 2^18551068480 is an apocalyptic number.

18551068480 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 18551068480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25719145920).

18551068480 is an abundant number, since it is smaller than the sum of its proper divisors (32887223360).

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

18551068480 is a wasteful number, since it uses less digits than its factorization.

18551068480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156336 (or 156326 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 46.

It can be divided in two parts, 1855 and 1068480, that multiplied together give a square (1982030400 = 44520²).

The spelling of 18551068480 in words is "eighteen billion, five hundred fifty-one million, sixty-eight thousand, four hundred eighty".