164365872212887 has 4 divisors (see below), whose sum is σ = 164368525519800. Its totient is φ = 164363218905976.

The previous prime is 164365872212881. The next prime is 164365872213047. The reversal of 164365872212887 is 788212278563461.

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 164365872212887 - 2³ = 164365872212879 is a prime.

It is a super-2 number, since 2×164365872212887² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164365872212881) 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, 1326560533 + ... + 1326684430.

It is an arithmetic number, because the mean of its divisors is an integer number (41092131379950).

Almost surely, 2^{164365872212887} is an apocalyptic number.

164365872212887 is a deficient number, since it is larger than the sum of its proper divisors (2653306913).

164365872212887 is an equidigital number, since it uses as much as digits as its factorization.

164365872212887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653306912.

The product of its digits is 433520640, while the sum is 70.

The spelling of 164365872212887 in words is "one hundred sixty-four trillion, three hundred sixty-five billion, eight hundred seventy-two million, two hundred twelve thousand, eight hundred eighty-seven".