16653405807 has 24 divisors (see below), whose sum is σ = 24116121120. Its totient is φ = 11074069440.

The previous prime is 16653405799. The next prime is 16653405869. The reversal of 16653405807 is 70850435661.

16653405807 is a `hidden beast` number, since 1 + 6 + 65 + 3 + 4 + 0 + 580 + 7 = 666.

It is not a de Polignac number, because 16653405807 - 2³ = 16653405799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16653405877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10427133 + ... + 10428729.

It is an arithmetic number, because the mean of its divisors is an integer number (1004838380).

Almost surely, 2^16653405807 is an apocalyptic number.

16653405807 is a deficient number, since it is larger than the sum of its proper divisors (7462715313).

16653405807 is a wasteful number, since it uses less digits than its factorization.

16653405807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823 (or 3820 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 16653405807 in words is "sixteen billion, six hundred fifty-three million, four hundred five thousand, eight hundred seven".