16907020729 has 3 divisors (see below), whose sum is σ = 16907150757. Its totient is φ = 16906890702.

The previous prime is 16907020721. The next prime is 16907020769. The reversal of 16907020729 is 92702070961.

The square root of 16907020729 is 130027.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92702070961 = 41 ⋅2261026121.

It is not a de Polignac number, because 16907020729 - 2³ = 16907020721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16907020721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 65014 + ... + 195040.

It is an arithmetic number, because the mean of its divisors is an integer number (5635716919).

Almost surely, 2^16907020729 is an apocalyptic number.

16907020729 is the 130027-th square number.

16907020729 is the 65014-th centered octagonal number.

It is an amenable number.

16907020729 is a deficient number, since it is larger than the sum of its proper divisors (130028).

16907020729 is an frugal number, since it uses more digits than its factorization.

16907020729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260054 (or 130027 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 16907020729 in words is "sixteen billion, nine hundred seven million, twenty thousand, seven hundred twenty-nine".