172031564408 has 64 divisors (see below), whose sum is σ = 361933228800. Its totient is φ = 75981588480.

The previous prime is 172031564407. The next prime is 172031564437. The reversal of 172031564408 is 804465130271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172031564407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612533 + ... + 848091.

It is an arithmetic number, because the mean of its divisors is an integer number (5655206700).

Almost surely, 2^172031564408 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 172031564408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180966614400).

172031564408 is an abundant number, since it is smaller than the sum of its proper divisors (189901664392).

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

172031564408 is a wasteful number, since it uses less digits than its factorization.

172031564408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235812 (or 235808 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

Adding to 172031564408 its reverse (804465130271), we get a palindrome (976496694679).

The spelling of 172031564408 in words is "one hundred seventy-two billion, thirty-one million, five hundred sixty-four thousand, four hundred eight".