16684167144961 has 4 divisors (see below), whose sum is σ = 16684252229632. Its totient is φ = 16684082060292.

The previous prime is 16684167144949. The next prime is 16684167144979. The reversal of 16684167144961 is 16944176148661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16684167144961 - 2³¹ = 16682019661313 is a prime.

It is a super-2 number, since 2×16684167144961² (a number of 27 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 = 16684167144893 and 16684167144902.

It is not an unprimeable number, because it can be changed into a prime (16684167144361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42247521 + ... + 42640606.

It is an arithmetic number, because the mean of its divisors is an integer number (4171063057408).

Almost surely, 2^{16684167144961} is an apocalyptic number.

It is an amenable number.

16684167144961 is a deficient number, since it is larger than the sum of its proper divisors (85084671).

16684167144961 is an equidigital number, since it uses as much as digits as its factorization.

16684167144961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85084670.

The product of its digits is 41803776, while the sum is 64.

The spelling of 16684167144961 in words is "sixteen trillion, six hundred eighty-four billion, one hundred sixty-seven million, one hundred forty-four thousand, nine hundred sixty-one".