172053158868 has 72 divisors (see below), whose sum is σ = 442332800000. Its totient is φ = 56373744960.

The previous prime is 172053158861. The next prime is 172053158891. The reversal of 172053158868 is 868851350271.

172053158868 is a `hidden beast` number, since 1 + 7 + 2 + 0 + 53 + 1 + 588 + 6 + 8 = 666.

172053158868 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 not an unprimeable number, because it can be changed into a prime (172053158861) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3416133 + ... + 3466131.

Almost surely, 2^172053158868 is an apocalyptic number.

172053158868 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 172053158868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221166400000).

172053158868 is an abundant number, since it is smaller than the sum of its proper divisors (270279641132).

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

172053158868 is a wasteful number, since it uses less digits than its factorization.

172053158868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51637 (or 51632 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 172053158868 in words is "one hundred seventy-two billion, fifty-three million, one hundred fifty-eight thousand, eight hundred sixty-eight".