172800000005 has 4 divisors (see below), whose sum is σ = 207360000012. Its totient is φ = 138240000000.

The previous prime is 172799999963. The next prime is 172800000031. The reversal of 172800000005 is 500000008271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111705013729 + 61094986276 = 334223^2 + 247174^2 .

It is not a de Polignac number, because 172800000005 - 2¹² = 172799995909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17279999996 + ... + 17280000005.

It is an arithmetic number, because the mean of its divisors is an integer number (51840000003).

Almost surely, 2^172800000005 is an apocalyptic number.

It is an amenable number.

172800000005 is a deficient number, since it is larger than the sum of its proper divisors (34560000007).

172800000005 is an equidigital number, since it uses as much as digits as its factorization.

172800000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34560000006.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 172800000005 its reverse (500000008271), we get a palindrome (672800008276).

The spelling of 172800000005 in words is "one hundred seventy-two billion, eight hundred million, five", and thus it is an aban number.