18648081795048 has 128 divisors (see below), whose sum is σ = 49880215756800. Its totient is φ = 5789115472896.

The previous prime is 18648081795019. The next prime is 18648081795097. The reversal of 18648081795048 is 84059718084681.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54586993 + ... + 54927551.

It is an arithmetic number, because the mean of its divisors is an integer number (389689185600).

Almost surely, 2^{18648081795048} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18648081795048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24940107878400).

18648081795048 is an abundant number, since it is smaller than the sum of its proper divisors (31232133961752).

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

18648081795048 is a wasteful number, since it uses less digits than its factorization.

18648081795048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341991 (or 341987 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 69.

The spelling of 18648081795048 in words is "eighteen trillion, six hundred forty-eight billion, eighty-one million, seven hundred ninety-five thousand, forty-eight".