172116737208 has 144 divisors (see below), whose sum is σ = 505159143840. Its totient is φ = 52917696000.

The previous prime is 172116737119. The next prime is 172116737231. The reversal of 172116737208 is 802737611271.

172116737208 is a `hidden beast` number, since 1 + 7 + 211 + 67 + 372 + 0 + 8 = 666.

172116737208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18016033 + ... + 18025583.

It is an arithmetic number, because the mean of its divisors is an integer number (3508049610).

Almost surely, 2^172116737208 is an apocalyptic number.

172116737208 is a gapful number since it is divisible by the number (18) 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 172116737208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252579571920).

172116737208 is an abundant number, since it is smaller than the sum of its proper divisors (333042406632).

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

172116737208 is a wasteful number, since it uses less digits than its factorization.

172116737208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11070 (or 11050 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The spelling of 172116737208 in words is "one hundred seventy-two billion, one hundred sixteen million, seven hundred thirty-seven thousand, two hundred eight".