172246506503 has 4 divisors (see below), whose sum is σ = 178186041240. Its totient is φ = 166306971768.

The previous prime is 172246506461. The next prime is 172246506521. The reversal of 172246506503 is 305605642271.

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

It is a cyclic number.

It is not a de Polignac number, because 172246506503 - 2²⁰ = 172245457927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172246506563) 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, 2969767325 + ... + 2969767382.

It is an arithmetic number, because the mean of its divisors is an integer number (44546510310).

Almost surely, 2^172246506503 is an apocalyptic number.

172246506503 is a deficient number, since it is larger than the sum of its proper divisors (5939534737).

172246506503 is an equidigital number, since it uses as much as digits as its factorization.

172246506503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939534736.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 172246506503 in words is "one hundred seventy-two billion, two hundred forty-six million, five hundred six thousand, five hundred three".