164497469648 has 40 divisors (see below), whose sum is σ = 337529412360. Its totient is φ = 77395046400.

The previous prime is 164497469639. The next prime is 164497469701. The reversal of 164497469648 is 846964794461.

It can be written as a sum of positive squares in 4 ways, for example, as 42226962064 + 122270507584 = 205492^2 + 349672^2 .

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1358798 + ... + 1474898.

It is an arithmetic number, because the mean of its divisors is an integer number (8438235309).

Almost surely, 2^164497469648 is an apocalyptic number.

It is an amenable number.

164497469648 is an abundant number, since it is smaller than the sum of its proper divisors (173031942712).

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

164497469648 is a wasteful number, since it uses less digits than its factorization.

164497469648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121335 (or 121329 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 68.

The spelling of 164497469648 in words is "one hundred sixty-four billion, four hundred ninety-seven million, four hundred sixty-nine thousand, six hundred forty-eight".