16660255414445 has 8 divisors (see below), whose sum is σ = 20005697200536. Its totient is φ = 13319277196096.

The previous prime is 16660255414349. The next prime is 16660255414447. The reversal of 16660255414445 is 54441455206661.

It can be written as a sum of positive squares in 4 ways, for example, as 1795444563364 + 14864810851081 = 1339942^2 + 3855491^2 .

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 16660255414445 - 2³⁰ = 16659181672621 is a prime.

It is a super-2 number, since 2×16660255414445² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660255414447) 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, 1115883722 + ... + 1115898651.

It is an arithmetic number, because the mean of its divisors is an integer number (2500712150067).

Almost surely, 2^{16660255414445} is an apocalyptic number.

It is an amenable number.

16660255414445 is a deficient number, since it is larger than the sum of its proper divisors (3345441786091).

16660255414445 is a wasteful number, since it uses less digits than its factorization.

16660255414445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231783871.

The product of its (nonzero) digits is 13824000, while the sum is 53.

The spelling of 16660255414445 in words is "sixteen trillion, six hundred sixty billion, two hundred fifty-five million, four hundred fourteen thousand, four hundred forty-five".