172229469793 has 4 divisors (see below), whose sum is σ = 172314860740. Its totient is φ = 172144078848.

The previous prime is 172229469779. The next prime is 172229469821. The reversal of 172229469793 is 397964922271.

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 152698848289 + 19530621504 = 390767^2 + 139752^2 .

It is a cyclic number.

It is not a de Polignac number, because 172229469793 - 2¹³ = 172229461601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172229469703) 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, 42692448 + ... + 42696481.

It is an arithmetic number, because the mean of its divisors is an integer number (43078715185).

Almost surely, 2^172229469793 is an apocalyptic number.

It is an amenable number.

172229469793 is a deficient number, since it is larger than the sum of its proper divisors (85390947).

172229469793 is an equidigital number, since it uses as much as digits as its factorization.

172229469793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85390946.

The product of its digits is 20575296, while the sum is 61.

The spelling of 172229469793 in words is "one hundred seventy-two billion, two hundred twenty-nine million, four hundred sixty-nine thousand, seven hundred ninety-three".