172441712520 has 1152 divisors, whose sum is σ = 731073208320. Its totient is φ = 34488115200.

The previous prime is 172441712519. The next prime is 172441712539. The reversal of 172441712520 is 25217144271.

172441712520 is a `hidden beast` number, since 1 + 7 + 24 + 41 + 71 + 2 + 520 = 666.

It is a super-2 number, since 2×172441712520² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 287 ways as a sum of consecutive naturals, for example, 1357808697 + ... + 1357808823.

It is an arithmetic number, because the mean of its divisors is an integer number (634612160).

Almost surely, 2^172441712520 is an apocalyptic number.

172441712520 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 172441712520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365536604160).

172441712520 is an abundant number, since it is smaller than the sum of its proper divisors (558631495800).

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

172441712520 is a wasteful number, since it uses less digits than its factorization.

172441712520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

Adding to 172441712520 its reverse (25217144271), we get a palindrome (197658856791).

The spelling of 172441712520 in words is "one hundred seventy-two billion, four hundred forty-one million, seven hundred twelve thousand, five hundred twenty".