172543054970880 has 1920 divisors, whose sum is σ = 713275913750400. Its totient is φ = 39627113103360.

The previous prime is 172543054970831. The next prime is 172543054970893. The reversal of 172543054970880 is 88079450345271.

172543054970880 is a `hidden beast` number, since 1 + 7 + 2 + 5 + 4 + 3 + 0 + 549 + 7 + 0 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a super-2 number, since 2×172543054970880² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9081213419511 + ... + 9081213419529.

It is an arithmetic number, because the mean of its divisors is an integer number (371497871745).

Almost surely, 2^{172543054970880} is an apocalyptic number.

172543054970880 is a gapful number since it is divisible by the number (10) 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 172543054970880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356637956875200).

172543054970880 is an abundant number, since it is smaller than the sum of its proper divisors (540732858779520).

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

172543054970880 is an frugal number, since it uses more digits than its factorization.

172543054970880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 63.

The spelling of 172543054970880 in words is "one hundred seventy-two trillion, five hundred forty-three billion, fifty-four million, nine hundred seventy thousand, eight hundred eighty".