18648081795049 has 16 divisors (see below), whose sum is σ = 22353800191488. Its totient is φ = 15221173136832.

The previous prime is 18648081795019. The next prime is 18648081795097. The reversal of 18648081795049 is 94059718084681.

It is a cyclic number.

It is not a de Polignac number, because 18648081795049 - 2¹⁵ = 18648081762281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18648081795019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765948634 + ... + 765972979.

It is an arithmetic number, because the mean of its divisors is an integer number (1397112511968).

Almost surely, 2^{18648081795049} is an apocalyptic number.

It is an amenable number.

18648081795049 is a deficient number, since it is larger than the sum of its proper divisors (3705718396439).

18648081795049 is a wasteful number, since it uses less digits than its factorization.

18648081795049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531921704.

The product of its (nonzero) digits is 139345920, while the sum is 70.

The spelling of 18648081795049 in words is "eighteen trillion, six hundred forty-eight billion, eighty-one million, seven hundred ninety-five thousand, forty-nine".