16660672211607 has 32 divisors (see below), whose sum is σ = 23076047093760. Its totient is φ = 10684388164320.

The previous prime is 16660672211597. The next prime is 16660672211611. The reversal of 16660672211607 is 70611227606661.

It is not a de Polignac number, because 16660672211607 - 2¹² = 16660672207511 is a prime.

It is a super-2 number, since 2×16660672211607² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16660672211607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660672211627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41586982 + ... + 41985692.

It is an arithmetic number, because the mean of its divisors is an integer number (721126471680).

Almost surely, 2^{16660672211607} is an apocalyptic number.

16660672211607 is a deficient number, since it is larger than the sum of its proper divisors (6415374882153).

16660672211607 is a wasteful number, since it uses less digits than its factorization.

16660672211607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403843.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 16660672211607 in words is "sixteen trillion, six hundred sixty billion, six hundred seventy-two million, two hundred eleven thousand, six hundred seven".