164050538506 has 16 divisors (see below), whose sum is σ = 252742217544. Its totient is φ = 79803408384.

The previous prime is 164050538471. The next prime is 164050538581. The reversal of 164050538506 is 605835050461.

It can be written as a sum of positive squares in 4 ways, for example, as 147693407481 + 16357131025 = 384309^2 + 127895^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316266 + ... + 1435498.

Almost surely, 2^164050538506 is an apocalyptic number.

164050538506 is a deficient number, since it is larger than the sum of its proper divisors (88691679038).

164050538506 is a wasteful number, since it uses less digits than its factorization.

164050538506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137865.

The product of its (nonzero) digits is 432000, while the sum is 43.

Adding to 164050538506 its reverse (605835050461), we get a palindrome (769885588967).

The spelling of 164050538506 in words is "one hundred sixty-four billion, fifty million, five hundred thirty-eight thousand, five hundred six".