164435543064 has 96 divisors (see below), whose sum is σ = 480445165200. Its totient is φ = 50506778880.

The previous prime is 164435543029. The next prime is 164435543081. The reversal of 164435543064 is 460345534461.

164435543064 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 3 + 554 + 30 + 64 = 666.

It is a super-3 number, since 3×164435543064³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 380622 + ... + 688290.

Almost surely, 2^164435543064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164435543064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240222582600).

164435543064 is an abundant number, since it is smaller than the sum of its proper divisors (316009622136).

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

164435543064 is a wasteful number, since it uses less digits than its factorization.

164435543064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308265 (or 308258 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 164435543064 in words is "one hundred sixty-four billion, four hundred thirty-five million, five hundred forty-three thousand, sixty-four".