164180166253 has 4 divisors (see below), whose sum is σ = 164181874428. Its totient is φ = 164178458080.

The previous prime is 164180166221. The next prime is 164180166257. The reversal of 164180166253 is 352661081461.

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 51346653604 + 112833512649 = 226598^2 + 335907^2 .

It is a cyclic number.

It is not a de Polignac number, because 164180166253 - 2⁵ = 164180166221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164180166257) 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, 700738 + ... + 905203.

It is an arithmetic number, because the mean of its divisors is an integer number (41045468607).

Almost surely, 2^164180166253 is an apocalyptic number.

It is an amenable number.

164180166253 is a deficient number, since it is larger than the sum of its proper divisors (1708175).

164180166253 is a wasteful number, since it uses less digits than its factorization.

164180166253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708174.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 164180166253 in words is "one hundred sixty-four billion, one hundred eighty million, one hundred sixty-six thousand, two hundred fifty-three".