16893969121 has 8 divisors (see below), whose sum is σ = 17067456000. Its totient is φ = 16720604400.

The previous prime is 16893969119. The next prime is 16893969179. The reversal of 16893969121 is 12196939861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16893969121 - 2¹ = 16893969119 is a prime.

It is a super-2 number, since 2×16893969121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16893969101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261730 + ... + 319828.

It is an arithmetic number, because the mean of its divisors is an integer number (2133432000).

Almost surely, 2^16893969121 is an apocalyptic number.

It is an amenable number.

16893969121 is a deficient number, since it is larger than the sum of its proper divisors (173486879).

16893969121 is a wasteful number, since it uses less digits than its factorization.

16893969121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61079.

The product of its digits is 1259712, while the sum is 55.

The spelling of 16893969121 in words is "sixteen billion, eight hundred ninety-three million, nine hundred sixty-nine thousand, one hundred twenty-one".