172416180403 has 4 divisors (see below), whose sum is σ = 182558308680. Its totient is φ = 162274052128.

The previous prime is 172416180389. The next prime is 172416180439. The reversal of 172416180403 is 304081614271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304081614271 = 18041 ⋅16855031.

It is a cyclic number.

It is not a de Polignac number, because 172416180403 - 2²⁵ = 172382625971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172416180473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5071064113 + ... + 5071064146.

It is an arithmetic number, because the mean of its divisors is an integer number (45639577170).

Almost surely, 2^172416180403 is an apocalyptic number.

172416180403 is a deficient number, since it is larger than the sum of its proper divisors (10142128277).

172416180403 is a wasteful number, since it uses less digits than its factorization.

172416180403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10142128276.

The product of its (nonzero) digits is 32256, while the sum is 37.

Adding to 172416180403 its reverse (304081614271), we get a palindrome (476497794674).

The spelling of 172416180403 in words is "one hundred seventy-two billion, four hundred sixteen million, one hundred eighty thousand, four hundred three".