164078281265 has 4 divisors (see below), whose sum is σ = 196893937524. Its totient is φ = 131262625008.

The previous prime is 164078281261. The next prime is 164078281271. The reversal of 164078281265 is 562182870461.

164078281265 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: 562182870461 = 399677 ⋅1406593.

It can be written as a sum of positive squares in 2 ways, for example, as 70519989136 + 93558292129 = 265556^2 + 305873^2 .

It is a cyclic number.

It is not a de Polignac number, because 164078281265 - 2² = 164078281261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164078281261) 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, 16407828122 + ... + 16407828131.

It is an arithmetic number, because the mean of its divisors is an integer number (49223484381).

Almost surely, 2^164078281265 is an apocalyptic number.

It is an amenable number.

164078281265 is a deficient number, since it is larger than the sum of its proper divisors (32815656259).

164078281265 is an equidigital number, since it uses as much as digits as its factorization.

164078281265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32815656258.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 164078281265 in words is "one hundred sixty-four billion, seventy-eight million, two hundred eighty-one thousand, two hundred sixty-five".