172445403000 has 192 divisors, whose sum is σ = 582601874400. Its totient is φ = 42447974400.

The previous prime is 172445402963. The next prime is 172445403007. The reversal of 172445403000 is 304544271.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172445403007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 336936 + ... + 677064.

Almost surely, 2^172445403000 is an apocalyptic number.

172445403000 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 172445403000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291300937200).

172445403000 is an abundant number, since it is smaller than the sum of its proper divisors (410156471400).

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

172445403000 is a wasteful number, since it uses less digits than its factorization.

172445403000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340179 (or 340152 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

Adding to 172445403000 its reverse (304544271), we get a palindrome (172749947271).

The spelling of 172445403000 in words is "one hundred seventy-two billion, four hundred forty-five million, four hundred three thousand".