164274854081 has 4 divisors (see below), whose sum is σ = 176911381332. Its totient is φ = 151638326832.

The previous prime is 164274854063. The next prime is 164274854101. The reversal of 164274854081 is 180458472461.

164274854081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180458472461 = 3769 ⋅47879669.

It can be written as a sum of positive squares in 2 ways, for example, as 10610854081 + 153664000000 = 103009^2 + 392000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164274854081 is a prime.

It is a super-2 number, since 2×164274854081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164274854281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6318263606 + ... + 6318263631.

It is an arithmetic number, because the mean of its divisors is an integer number (44227845333).

Almost surely, 2^164274854081 is an apocalyptic number.

It is an amenable number.

164274854081 is a deficient number, since it is larger than the sum of its proper divisors (12636527251).

164274854081 is a wasteful number, since it uses less digits than its factorization.

164274854081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12636527250.

The product of its (nonzero) digits is 1720320, while the sum is 50.

The spelling of 164274854081 in words is "one hundred sixty-four billion, two hundred seventy-four million, eight hundred fifty-four thousand, eighty-one".