164521436324601 has 32 divisors (see below), whose sum is σ = 222483570059520. Its totient is φ = 108130655453184.

The previous prime is 164521436324549. The next prime is 164521436324603. The reversal of 164521436324601 is 106423634125461.

It is not a de Polignac number, because 164521436324601 - 2⁶ = 164521436324537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164521436324603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 438762340 + ... + 439137146.

It is an arithmetic number, because the mean of its divisors is an integer number (6952611564360).

Almost surely, 2^{164521436324601} is an apocalyptic number.

It is an amenable number.

164521436324601 is a deficient number, since it is larger than the sum of its proper divisors (57962133734919).

164521436324601 is a wasteful number, since it uses less digits than its factorization.

164521436324601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381825.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 164521436324601 in words is "one hundred sixty-four trillion, five hundred twenty-one billion, four hundred thirty-six million, three hundred twenty-four thousand, six hundred one".