164461581241 has 4 divisors (see below), whose sum is σ = 164498435712. Its totient is φ = 164424726772.

The previous prime is 164461581227. The next prime is 164461581247. The reversal of 164461581241 is 142185164461.

164461581241 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164461581241 - 2¹³ = 164461573049 is a prime.

It is a super-2 number, since 2×164461581241² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164461581247) 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, 18420541 + ... + 18429466.

It is an arithmetic number, because the mean of its divisors is an integer number (41124608928).

Almost surely, 2^164461581241 is an apocalyptic number.

It is an amenable number.

164461581241 is a deficient number, since it is larger than the sum of its proper divisors (36854471).

164461581241 is an equidigital number, since it uses as much as digits as its factorization.

164461581241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36854470.

The product of its digits is 184320, while the sum is 43.

The spelling of 164461581241 in words is "one hundred sixty-four billion, four hundred sixty-one million, five hundred eighty-one thousand, two hundred forty-one".