16660274168503 has 32 divisors (see below), whose sum is σ = 21070521360000. Its totient is φ = 12842983931904.

The previous prime is 16660274168501. The next prime is 16660274168533. The reversal of 16660274168503 is 30586147206661.

It is a happy number.

It is not a de Polignac number, because 16660274168503 - 2¹ = 16660274168501 is a prime.

It is a super-2 number, since 2×16660274168503² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660274168501) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 24550128 + ... + 25219621.

It is an arithmetic number, because the mean of its divisors is an integer number (658453792500).

Almost surely, 2^{16660274168503} is an apocalyptic number.

16660274168503 is a deficient number, since it is larger than the sum of its proper divisors (4410247191497).

16660274168503 is a wasteful number, since it uses less digits than its factorization.

16660274168503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49769899.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 16660274168503 in words is "sixteen trillion, six hundred sixty billion, two hundred seventy-four million, one hundred sixty-eight thousand, five hundred three".