18448143627550 has 96 divisors (see below), whose sum is σ = 42245674228800. Its totient is φ = 5836650946560.

The previous prime is 18448143627533. The next prime is 18448143627629. The reversal of 18448143627550 is 5572634184481.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13493886 + ... + 14798014.

It is an arithmetic number, because the mean of its divisors is an integer number (440059106550).

Almost surely, 2^{18448143627550} is an apocalyptic number.

18448143627550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18448143627550 is an abundant number, since it is smaller than the sum of its proper divisors (23797530601250).

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

18448143627550 is a wasteful number, since it uses less digits than its factorization.

18448143627550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307270 (or 1307265 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 58.

The spelling of 18448143627550 in words is "eighteen trillion, four hundred forty-eight billion, one hundred forty-three million, six hundred twenty-seven thousand, five hundred fifty".