164523564629 has 4 divisors (see below), whose sum is σ = 168536334540. Its totient is φ = 160510794720.

The previous prime is 164523564617. The next prime is 164523564671. The reversal of 164523564629 is 926465325461.

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 8282820100 + 156240744529 = 91010^2 + 395273^2 .

It is a cyclic number.

It is not a de Polignac number, because 164523564629 - 2¹² = 164523560533 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 (164523564929) 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, 2006384894 + ... + 2006384975.

It is an arithmetic number, because the mean of its divisors is an integer number (42134083635).

Almost surely, 2^164523564629 is an apocalyptic number.

It is an amenable number.

164523564629 is a deficient number, since it is larger than the sum of its proper divisors (4012769911).

164523564629 is an equidigital number, since it uses as much as digits as its factorization.

164523564629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012769910.

The product of its digits is 9331200, while the sum is 53.

The spelling of 164523564629 in words is "one hundred sixty-four billion, five hundred twenty-three million, five hundred sixty-four thousand, six hundred twenty-nine".