164236634511506 has 8 divisors (see below), whose sum is σ = 246355357041084. Its totient is φ = 82118182164480.

The previous prime is 164236634511487. The next prime is 164236634511557. The reversal of 164236634511506 is 605115436632461.

It can be written as a sum of positive squares in 2 ways, for example, as 144628644607225 + 19607989904281 = 12026165^2 + 4428091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 66019055 + ... + 68461586.

Almost surely, 2^{164236634511506} is an apocalyptic number.

164236634511506 is a deficient number, since it is larger than the sum of its proper divisors (82118722529578).

164236634511506 is a wasteful number, since it uses less digits than its factorization.

164236634511506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135091276.

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

The spelling of 164236634511506 in words is "one hundred sixty-four trillion, two hundred thirty-six billion, six hundred thirty-four million, five hundred eleven thousand, five hundred six".