16702719121 has 27 divisors (see below), whose sum is σ = 19020709449. Its totient is φ = 14655702600.

The previous prime is 16702719107. The next prime is 16702719127. The reversal of 16702719121 is 12191720761.

The square root of 16702719121 is 129239.

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

16702719121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16702719121 - 2⁷ = 16702718993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16702719127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 44070310 + ... + 44070688.

Almost surely, 2^16702719121 is an apocalyptic number.

16702719121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16702719121 is the 129239-th square number.

16702719121 is the 64620-th centered octagonal number.

It is an amenable number.

16702719121 is a deficient number, since it is larger than the sum of its proper divisors (2317990328).

16702719121 is an frugal number, since it uses more digits than its factorization.

16702719121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 37.

The spelling of 16702719121 in words is "sixteen billion, seven hundred two million, seven hundred nineteen thousand, one hundred twenty-one".