16653313491 has 8 divisors (see below), whose sum is σ = 22920689664. Its totient is φ = 10744073160.

The previous prime is 16653313489. The next prime is 16653313499. The reversal of 16653313491 is 19431335661.

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

It is not a de Polignac number, because 16653313491 - 2¹ = 16653313489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16653313499) 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, 89533851 + ... + 89534036.

It is an arithmetic number, because the mean of its divisors is an integer number (2865086208).

Almost surely, 2^16653313491 is an apocalyptic number.

16653313491 is a deficient number, since it is larger than the sum of its proper divisors (6267376173).

16653313491 is a wasteful number, since it uses less digits than its factorization.

16653313491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179067921.

The product of its digits is 174960, while the sum is 42.

The spelling of 16653313491 in words is "sixteen billion, six hundred fifty-three million, three hundred thirteen thousand, four hundred ninety-one".