16699483525805 has 4 divisors (see below), whose sum is σ = 20039380230972. Its totient is φ = 13359586820640.

The previous prime is 16699483525801. The next prime is 16699483525841. The reversal of 16699483525805 is 50852538499661.

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 5036698459081 + 11662785066724 = 2244259^2 + 3415082^2 .

It is not a de Polignac number, because 16699483525805 - 2² = 16699483525801 is a prime.

It is a super-3 number, since 3×16699483525805³ (a number of 41 digits) contains 333 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 (16699483525801) 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, 1669948352576 + ... + 1669948352585.

It is an arithmetic number, because the mean of its divisors is an integer number (5009845057743).

Almost surely, 2^{16699483525805} is an apocalyptic number.

It is an amenable number.

16699483525805 is a deficient number, since it is larger than the sum of its proper divisors (3339896705167).

16699483525805 is an equidigital number, since it uses as much as digits as its factorization.

16699483525805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339896705166.

The product of its (nonzero) digits is 559872000, while the sum is 71.

The spelling of 16699483525805 in words is "sixteen trillion, six hundred ninety-nine billion, four hundred eighty-three million, five hundred twenty-five thousand, eight hundred five".