172287519397 has 8 divisors (see below), whose sum is σ = 197344495296. Its totient is φ = 147341661792.

The previous prime is 172287519361. The next prime is 172287519403. The reversal of 172287519397 is 793915782271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172287519397 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 (172287519497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27776248 + ... + 27782449.

It is an arithmetic number, because the mean of its divisors is an integer number (24668061912).

Almost surely, 2^172287519397 is an apocalyptic number.

It is an amenable number.

172287519397 is a deficient number, since it is larger than the sum of its proper divisors (25056975899).

172287519397 is an equidigital number, since it uses as much as digits as its factorization.

172287519397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55559147.

The product of its digits is 13335840, while the sum is 61.

The spelling of 172287519397 in words is "one hundred seventy-two billion, two hundred eighty-seven million, five hundred nineteen thousand, three hundred ninety-seven".