16998253261 has 8 divisors (see below), whose sum is σ = 18938093184. Its totient is φ = 15124170720.

The previous prime is 16998253241. The next prime is 16998253289. The reversal of 16998253261 is 16235289961.

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 16998253261 - 2⁷ = 16998253133 is a prime.

It is a super-2 number, since 2×16998253261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16998253199 and 16998253208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16998253231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16438800 + ... + 16439833.

It is an arithmetic number, because the mean of its divisors is an integer number (2367261648).

Almost surely, 2^16998253261 is an apocalyptic number.

16998253261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16998253261 is a deficient number, since it is larger than the sum of its proper divisors (1939839923).

16998253261 is a wasteful number, since it uses less digits than its factorization.

16998253261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32878691.

The product of its digits is 1399680, while the sum is 52.

The spelling of 16998253261 in words is "sixteen billion, nine hundred ninety-eight million, two hundred fifty-three thousand, two hundred sixty-one".