172623360000 has 1560 divisors, whose sum is σ = 749236667520. Its totient is φ = 34504704000.

The previous prime is 172623359989. The next prime is 172623360023. The reversal of 172623360000 is 63326271.

It is a tau number, because it is divible by the number of its divisors (1560).

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

It is a self number, because there is not a number n which added to its sum of digits gives 172623360000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 9085439991 + ... + 9085440009.

Almost surely, 2^172623360000 is an apocalyptic number.

172623360000 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 172623360000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374618333760).

172623360000 is an abundant number, since it is smaller than the sum of its proper divisors (576613307520).

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

172623360000 is an equidigital number, since it uses as much as digits as its factorization.

172623360000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

Adding to 172623360000 its reverse (63326271), we get a palindrome (172686686271).

The spelling of 172623360000 in words is "one hundred seventy-two billion, six hundred twenty-three million, three hundred sixty thousand".