164187623601 has 6 divisors (see below), whose sum is σ = 237159900770. Its totient is φ = 109458415728.

The previous prime is 164187623507. The next prime is 164187623627. The reversal of 164187623601 is 106326781461.

164187623601 is a `hidden beast` number, since 1 + 6 + 4 + 18 + 7 + 6 + 23 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 108125222976 + 56062400625 = 328824^2 + 236775^2 .

It is not a de Polignac number, because 164187623601 - 2¹⁹ = 164187099313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164187623651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9121534636 + ... + 9121534653.

Almost surely, 2^164187623601 is an apocalyptic number.

It is an amenable number.

164187623601 is a deficient number, since it is larger than the sum of its proper divisors (72972277169).

164187623601 is a wasteful number, since it uses less digits than its factorization.

164187623601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18243069295 (or 18243069292 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 164187623601 in words is "one hundred sixty-four billion, one hundred eighty-seven million, six hundred twenty-three thousand, six hundred one".