164156265601 has 4 divisors (see below), whose sum is σ = 164174487892. Its totient is φ = 164138043312.

The previous prime is 164156265587. The next prime is 164156265631. The reversal of 164156265601 is 106562651461.

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 23231856400 + 140924409201 = 152420^2 + 375399^2 .

It is a cyclic number.

It is not a de Polignac number, because 164156265601 - 2²⁹ = 163619394689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164156265631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9097626 + ... + 9115651.

It is an arithmetic number, because the mean of its divisors is an integer number (41043621973).

Almost surely, 2^164156265601 is an apocalyptic number.

It is an amenable number.

164156265601 is a deficient number, since it is larger than the sum of its proper divisors (18222291).

164156265601 is an equidigital number, since it uses as much as digits as its factorization.

164156265601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18222290.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 164156265601 in words is "one hundred sixty-four billion, one hundred fifty-six million, two hundred sixty-five thousand, six hundred one".