16660374651636 has 12 divisors (see below), whose sum is σ = 38874207520512. Its totient is φ = 5553458217208.

The previous prime is 16660374651617. The next prime is 16660374651659. The reversal of 16660374651636 is 63615647306661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16660374651636.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694182277140 + ... + 694182277163.

It is an arithmetic number, because the mean of its divisors is an integer number (3239517293376).

Almost surely, 2^{16660374651636} is an apocalyptic number.

It is an amenable number.

16660374651636 is an abundant number, since it is smaller than the sum of its proper divisors (22213832868876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16660374651636 is a wasteful number, since it uses less digits than its factorization.

16660374651636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388364554310 (or 1388364554308 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 60.

The spelling of 16660374651636 in words is "sixteen trillion, six hundred sixty billion, three hundred seventy-four million, six hundred fifty-one thousand, six hundred thirty-six".