164353712091 has 4 divisors (see below), whose sum is σ = 219138282792. Its totient is φ = 109569141392.

The previous prime is 164353712069. The next prime is 164353712099. The reversal of 164353712091 is 190217353461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164353712091 - 2¹⁵ = 164353679323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164353712099) 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, 27392285346 + ... + 27392285351.

It is an arithmetic number, because the mean of its divisors is an integer number (54784570698).

Almost surely, 2^164353712091 is an apocalyptic number.

164353712091 is a deficient number, since it is larger than the sum of its proper divisors (54784570701).

164353712091 is an equidigital number, since it uses as much as digits as its factorization.

164353712091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54784570700.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 164353712091 in words is "one hundred sixty-four billion, three hundred fifty-three million, seven hundred twelve thousand, ninety-one".