164442560634 has 48 divisors (see below), whose sum is σ = 411546096000. Its totient is φ = 46899838080.

The previous prime is 164442560591. The next prime is 164442560687. The reversal of 164442560634 is 436065244461.

164442560634 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 4 + 2 + 5 + 6 + 0 + 634 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 164442560634.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 24423634 + ... + 24430365.

It is an arithmetic number, because the mean of its divisors is an integer number (8573877000).

Almost surely, 2^164442560634 is an apocalyptic number.

164442560634 is an abundant number, since it is smaller than the sum of its proper divisors (247103535366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164442560634 is a wasteful number, since it uses less digits than its factorization.

164442560634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48854035 (or 48854032 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 164442560634 in words is "one hundred sixty-four billion, four hundred forty-two million, five hundred sixty thousand, six hundred thirty-four".