18448376850503 has 4 divisors (see below), whose sum is σ = 18468451254960. Its totient is φ = 18428302446048.

The previous prime is 18448376850487. The next prime is 18448376850511. The reversal of 18448376850503 is 30505867384481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18448376850503 - 2⁴ = 18448376850487 is a prime.

It is a super-2 number, since 2×18448376850503² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18448376850203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10037200850 + ... + 10037202687.

It is an arithmetic number, because the mean of its divisors is an integer number (4617112813740).

Almost surely, 2^{18448376850503} is an apocalyptic number.

18448376850503 is a deficient number, since it is larger than the sum of its proper divisors (20074404457).

18448376850503 is an equidigital number, since it uses as much as digits as its factorization.

18448376850503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20074404456.

The product of its (nonzero) digits is 77414400, while the sum is 62.

The spelling of 18448376850503 in words is "eighteen trillion, four hundred forty-eight billion, three hundred seventy-six million, eight hundred fifty thousand, five hundred three".