16731533553 has 8 divisors (see below), whose sum is σ = 25495670208. Its totient is φ = 9560876304.

The previous prime is 16731533491. The next prime is 16731533561. The reversal of 16731533553 is 35533513761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16731533553 - 2²² = 16727339249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16731533573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398369826 + ... + 398369867.

It is an arithmetic number, because the mean of its divisors is an integer number (3186958776).

Almost surely, 2^16731533553 is an apocalyptic number.

It is an amenable number.

16731533553 is a deficient number, since it is larger than the sum of its proper divisors (8764136655).

16731533553 is an equidigital number, since it uses as much as digits as its factorization.

16731533553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796739703.

The product of its digits is 425250, while the sum is 42.

The spelling of 16731533553 in words is "sixteen billion, seven hundred thirty-one million, five hundred thirty-three thousand, five hundred fifty-three".