16892601423721 has 9 divisors (see below), whose sum is σ = 17828562036861. Its totient is φ = 16003443157164.

The previous prime is 16892601423647. The next prime is 16892601423779. The reversal of 16892601423721 is 12732410629861.

The square root of 16892601423721 is 4110061.

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

It is not a de Polignac number, because 16892601423721 - 2¹⁵ = 16892601390953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16892601423421) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 77983000 + ... + 78199318.

It is an arithmetic number, because the mean of its divisors is an integer number (1980951337429).

Almost surely, 2^{16892601423721} is an apocalyptic number.

16892601423721 is the 4110061-st square number.

16892601423721 is the 2055031-st centered octagonal number.

It is an amenable number.

16892601423721 is a deficient number, since it is larger than the sum of its proper divisors (935960613140).

16892601423721 is an frugal number, since it uses more digits than its factorization.

16892601423721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432676 (or 216338 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 16892601423721 in words is "sixteen trillion, eight hundred ninety-two billion, six hundred one million, four hundred twenty-three thousand, seven hundred twenty-one".