16553136605 has 8 divisors (see below), whose sum is σ = 19866961152. Its totient is φ = 13240377808.

The previous prime is 16553136601. The next prime is 16553136631. The reversal of 16553136605 is 50663135561.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16553136605 - 2² = 16553136601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16553136601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231857 + ... + 294726.

It is an arithmetic number, because the mean of its divisors is an integer number (2483370144).

Almost surely, 2^16553136605 is an apocalyptic number.

It is an amenable number.

16553136605 is a deficient number, since it is larger than the sum of its proper divisors (3313824547).

16553136605 is an equidigital number, since it uses as much as digits as its factorization.

16553136605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532875.

The product of its (nonzero) digits is 243000, while the sum is 41.

The spelling of 16553136605 in words is "sixteen billion, five hundred fifty-three million, one hundred thirty-six thousand, six hundred five".