16606777121 has 8 divisors (see below), whose sum is σ = 18254779488. Its totient is φ = 14981824000.

The previous prime is 16606777111. The next prime is 16606777129. The reversal of 16606777121 is 12177760661.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-16606777121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16606777129) 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, 5760800 + ... + 5763681.

It is an arithmetic number, because the mean of its divisors is an integer number (2281847436).

Almost surely, 2^16606777121 is an apocalyptic number.

16606777121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16606777121 is a deficient number, since it is larger than the sum of its proper divisors (1648002367).

16606777121 is a wasteful number, since it uses less digits than its factorization.

16606777121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11524623.

The product of its (nonzero) digits is 148176, while the sum is 44.

The spelling of 16606777121 in words is "sixteen billion, six hundred six million, seven hundred seventy-seven thousand, one hundred twenty-one".