52171671667 has 4 divisors (see below), whose sum is σ = 52906484016. Its totient is φ = 51436859320.

The previous prime is 52171671661. The next prime is 52171671691. The reversal of 52171671667 is 76617617125.

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 52171671667 - 2³ = 52171671659 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 52171671667.

It is not an unprimeable number, because it can be changed into a prime (52171671661) 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, 367406068 + ... + 367406209.

It is an arithmetic number, because the mean of its divisors is an integer number (13226621004).

Almost surely, 2^52171671667 is an apocalyptic number.

52171671667 is a deficient number, since it is larger than the sum of its proper divisors (734812349).

52171671667 is an equidigital number, since it uses as much as digits as its factorization.

52171671667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734812348.

The product of its digits is 740880, while the sum is 49.

The spelling of 52171671667 in words is "fifty-two billion, one hundred seventy-one million, six hundred seventy-one thousand, six hundred sixty-seven".