172653356272 has 80 divisors (see below), whose sum is σ = 352525865472. Its totient is φ = 81757589760.

The previous prime is 172653356263. The next prime is 172653356279. The reversal of 172653356272 is 272653356271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172653356279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15291013 + ... + 15302299.

Almost surely, 2^172653356272 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 172653356272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176262932736).

172653356272 is an abundant number, since it is smaller than the sum of its proper divisors (179872509200).

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

172653356272 is a wasteful number, since it uses less digits than its factorization.

172653356272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11726 (or 11720 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 49.

Subtracting 172653356272 from its reverse (272653356271), we obtain a palindrome (99999999999).

The spelling of 172653356272 in words is "one hundred seventy-two billion, six hundred fifty-three million, three hundred fifty-six thousand, two hundred seventy-two".