171227429247 has 16 divisors (see below), whose sum is σ = 260945949440. Its totient is φ = 97833759552.

The previous prime is 171227429207. The next prime is 171227429249. The reversal of 171227429247 is 742924722171.

It is not a de Polignac number, because 171227429247 - 2¹⁵ = 171227396479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171227429196 and 171227429205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171227429249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234097 + ... + 630282.

It is an arithmetic number, because the mean of its divisors is an integer number (16309121840).

Almost surely, 2^171227429247 is an apocalyptic number.

171227429247 is a deficient number, since it is larger than the sum of its proper divisors (89718520193).

171227429247 is an equidigital number, since it uses as much as digits as its factorization.

171227429247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873822.

The product of its digits is 790272, while the sum is 48.

The spelling of 171227429247 in words is "one hundred seventy-one billion, two hundred twenty-seven million, four hundred twenty-nine thousand, two hundred forty-seven".