171428802321 has 8 divisors (see below), whose sum is σ = 261224841664. Its totient is φ = 97959315600.

The previous prime is 171428802313. The next prime is 171428802359. The reversal of 171428802321 is 123208824171.

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

It is not a de Polignac number, because 171428802321 - 2³ = 171428802313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 171428802321.

It is not an unprimeable number, because it can be changed into a prime (171428802371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4081638130 + ... + 4081638171.

It is an arithmetic number, because the mean of its divisors is an integer number (32653105208).

Almost surely, 2^171428802321 is an apocalyptic number.

It is an amenable number.

171428802321 is a deficient number, since it is larger than the sum of its proper divisors (89796039343).

171428802321 is an equidigital number, since it uses as much as digits as its factorization.

171428802321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8163276311.

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 171428802321 in words is "one hundred seventy-one billion, four hundred twenty-eight million, eight hundred two thousand, three hundred twenty-one".