16146910606681 has 4 divisors (see below), whose sum is σ = 16205202703012. Its totient is φ = 16088618510352.

The previous prime is 16146910606667. The next prime is 16146910606691. The reversal of 16146910606681 is 18660601964161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8145316000000 + 8001594606681 = 2854000^2 + 2828709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16146910606681 is a prime.

It is a super-3 number, since 3×16146910606681³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16146910606661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29146047750 + ... + 29146048303.

It is an arithmetic number, because the mean of its divisors is an integer number (4051300675753).

Almost surely, 2^{16146910606681} is an apocalyptic number.

It is an amenable number.

16146910606681 is a deficient number, since it is larger than the sum of its proper divisors (58292096331).

16146910606681 is an equidigital number, since it uses as much as digits as its factorization.

16146910606681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58292096330.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 16146910606681 in words is "sixteen trillion, one hundred forty-six billion, nine hundred ten million, six hundred six thousand, six hundred eighty-one".