172940361168 has 160 divisors (see below), whose sum is σ = 493409689600. Its totient is φ = 51984115200.

The previous prime is 172940361131. The next prime is 172940361203. The reversal of 172940361168 is 861163049271.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1674453 + ... + 1774731.

It is an arithmetic number, because the mean of its divisors is an integer number (3083810560).

Almost surely, 2^172940361168 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 172940361168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246704844800).

172940361168 is an abundant number, since it is smaller than the sum of its proper divisors (320469328432).

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

172940361168 is a wasteful number, since it uses less digits than its factorization.

172940361168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100401 (or 100395 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 172940361168 in words is "one hundred seventy-two billion, nine hundred forty million, three hundred sixty-one thousand, one hundred sixty-eight".