164435543065 has 4 divisors (see below), whose sum is σ = 197322651684. Its totient is φ = 131548434448.

The previous prime is 164435543029. The next prime is 164435543081. The reversal of 164435543065 is 560345534461.

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 67533456384 + 96902086681 = 259872^2 + 311291^2 .

It is a cyclic number.

It is not a de Polignac number, because 164435543065 - 2¹³ = 164435534873 is a prime.

It is a super-3 number, since 3×164435543065³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16443554302 + ... + 16443554311.

It is an arithmetic number, because the mean of its divisors is an integer number (49330662921).

Almost surely, 2^164435543065 is an apocalyptic number.

It is an amenable number.

164435543065 is a deficient number, since it is larger than the sum of its proper divisors (32887108619).

164435543065 is an equidigital number, since it uses as much as digits as its factorization.

164435543065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32887108618.

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 164435543065 in words is "one hundred sixty-four billion, four hundred thirty-five million, five hundred forty-three thousand, sixty-five".