16661172205035 has 96 divisors (see below), whose sum is σ = 30547471368960. Its totient is φ = 8377344463104.

The previous prime is 16661172205003. The next prime is 16661172205043. The reversal of 16661172205035 is 53050227116661.

It is not a de Polignac number, because 16661172205035 - 2⁵ = 16661172205003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 159045184 + ... + 159149906.

It is an arithmetic number, because the mean of its divisors is an integer number (318202826760).

Almost surely, 2^{16661172205035} is an apocalyptic number.

16661172205035 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16661172205035 is a deficient number, since it is larger than the sum of its proper divisors (13886299163925).

16661172205035 is a wasteful number, since it uses less digits than its factorization.

16661172205035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105657 (or 105654 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 16661172205035 in words is "sixteen trillion, six hundred sixty-one billion, one hundred seventy-two million, two hundred five thousand, thirty-five".