16772066091 has 32 divisors (see below), whose sum is σ = 28700870400. Its totient is φ = 9566951040.

The previous prime is 16772066029. The next prime is 16772066123. The reversal of 16772066091 is 19066027761.

It is a happy number.

16772066091 is a `hidden beast` number, since 16 + 7 + 7 + 20 + 6 + 609 + 1 = 666.

It is not a de Polignac number, because 16772066091 - 2¹⁹ = 16771541803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16772066191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1655881 + ... + 1665978.

It is an arithmetic number, because the mean of its divisors is an integer number (896902200).

Almost surely, 2^16772066091 is an apocalyptic number.

16772066091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16772066091 is a deficient number, since it is larger than the sum of its proper divisors (11928804309).

16772066091 is a wasteful number, since it uses less digits than its factorization.

16772066091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321896 (or 3321890 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 16772066091 in words is "sixteen billion, seven hundred seventy-two million, sixty-six thousand, ninety-one".