173197664640 has 4096 divisors, whose sum is σ = 947552256000. Its totient is φ = 28665446400.

The previous prime is 173197664599. The next prime is 173197664777. The reversal of 173197664640 is 46466791371.

173197664640 is a `hidden beast` number, since 1 + 7 + 31 + 97 + 66 + 464 + 0 = 666.

173197664640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 5587021425 + ... + 5587021455.

It is an arithmetic number, because the mean of its divisors is an integer number (231336000).

Almost surely, 2^173197664640 is an apocalyptic number.

173197664640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 173197664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (473776128000).

173197664640 is an abundant number, since it is smaller than the sum of its proper divisors (774354591360).

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

173197664640 is a wasteful number, since it uses less digits than its factorization.

173197664640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 173197664640 in words is "one hundred seventy-three billion, one hundred ninety-seven million, six hundred sixty-four thousand, six hundred forty".