18048973553 has 16 divisors (see below), whose sum is σ = 19898805696. Its totient is φ = 16265430720.

The previous prime is 18048973541. The next prime is 18048973567. The reversal of 18048973553 is 35537984081.

It is a cyclic number.

It is not a de Polignac number, because 18048973553 - 2⁶ = 18048973489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18048973495 and 18048973504.

It is not an unprimeable number, because it can be changed into a prime (18048963553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1408451 + ... + 1421207.

It is an arithmetic number, because the mean of its divisors is an integer number (1243675356).

Almost surely, 2^18048973553 is an apocalyptic number.

18048973553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18048973553 is a deficient number, since it is larger than the sum of its proper divisors (1849832143).

18048973553 is a wasteful number, since it uses less digits than its factorization.

18048973553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15344.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 18048973553 in words is "eighteen billion, forty-eight million, nine hundred seventy-three thousand, five hundred fifty-three".