164442560633 has 4 divisors (see below), whose sum is σ = 177091988388. Its totient is φ = 151793132880.

The previous prime is 164442560591. The next prime is 164442560687. The reversal of 164442560633 is 336065244461.

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 25024708864 + 139417851769 = 158192^2 + 373387^2 .

It is a cyclic number.

It is not a de Polignac number, because 164442560633 - 2¹⁴ = 164442544249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164442560833) 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, 6324713858 + ... + 6324713883.

It is an arithmetic number, because the mean of its divisors is an integer number (44272997097).

Almost surely, 2^164442560633 is an apocalyptic number.

164442560633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

164442560633 is a deficient number, since it is larger than the sum of its proper divisors (12649427755).

164442560633 is a wasteful number, since it uses less digits than its factorization.

164442560633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12649427754.

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 164442560633 in words is "one hundred sixty-four billion, four hundred forty-two million, five hundred sixty thousand, six hundred thirty-three".