16661534213362 has 8 divisors (see below), whose sum is σ = 24992337707100. Its totient is φ = 8330754977664.

The previous prime is 16661534213353. The next prime is 16661534213419. The reversal of 16661534213362 is 26331243516661.

It can be written as a sum of positive squares in 2 ways, for example, as 14592254840361 + 2069279373001 = 3819981^2 + 1438499^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4237287 + ... + 7160842.

Almost surely, 2^{16661534213362} is an apocalyptic number.

16661534213362 is a deficient number, since it is larger than the sum of its proper divisors (8330803493738).

16661534213362 is a wasteful number, since it uses less digits than its factorization.

16661534213362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12129020.

The product of its digits is 2799360, while the sum is 49.

The spelling of 16661534213362 in words is "sixteen trillion, six hundred sixty-one billion, five hundred thirty-four million, two hundred thirteen thousand, three hundred sixty-two".