16606777099 has 16 divisors (see below), whose sum is σ = 18389756160. Its totient is φ = 14869764000.

The previous prime is 16606777091. The next prime is 16606777111. The reversal of 16606777099 is 99077760661.

It is a cyclic number.

It is not a de Polignac number, because 16606777099 - 2³ = 16606777091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16606777091) 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, 824944 + ... + 844834.

It is an arithmetic number, because the mean of its divisors is an integer number (1149359760).

Almost surely, 2^16606777099 is an apocalyptic number.

16606777099 is a deficient number, since it is larger than the sum of its proper divisors (1782979061).

16606777099 is a wasteful number, since it uses less digits than its factorization.

16606777099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21042.

The product of its (nonzero) digits is 6001128, while the sum is 58.

The spelling of 16606777099 in words is "sixteen billion, six hundred six million, seven hundred seventy-seven thousand, ninety-nine".