16997072729 has 32 divisors (see below), whose sum is σ = 21224560896. Its totient is φ = 13253425920.

The previous prime is 16997072693. The next prime is 16997072759. The reversal of 16997072729 is 92727079961.

It is not a de Polignac number, because 16997072729 - 2¹⁶ = 16997007193 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16997072759) 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, 1913759 + ... + 1922619.

It is an arithmetic number, because the mean of its divisors is an integer number (663267528).

Almost surely, 2^16997072729 is an apocalyptic number.

It is an amenable number.

16997072729 is a deficient number, since it is larger than the sum of its proper divisors (4227488167).

16997072729 is a wasteful number, since it uses less digits than its factorization.

16997072729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9185.

The product of its (nonzero) digits is 6001128, while the sum is 59.

The spelling of 16997072729 in words is "sixteen billion, nine hundred ninety-seven million, seventy-two thousand, seven hundred twenty-nine".