16297982121 has 8 divisors (see below), whose sum is σ = 21734211744. Its totient is φ = 10863536960.

The previous prime is 16297982081. The next prime is 16297982179. The reversal of 16297982121 is 12128979261.

It is a happy number.

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 16297982121 - 2¹⁷ = 16297851049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16297982521) 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, 424656 + ... + 461441.

It is an arithmetic number, because the mean of its divisors is an integer number (2716776468).

Almost surely, 2^16297982121 is an apocalyptic number.

It is an amenable number.

16297982121 is a deficient number, since it is larger than the sum of its proper divisors (5436229623).

16297982121 is an equidigital number, since it uses as much as digits as its factorization.

16297982121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892231.

The product of its digits is 217728, while the sum is 48.

The spelling of 16297982121 in words is "sixteen billion, two hundred ninety-seven million, nine hundred eighty-two thousand, one hundred twenty-one".