3172571661623 has 8 divisors (see below), whose sum is σ = 3904703583648. Its totient is φ = 2510166589344.

The previous prime is 3172571661541. The next prime is 3172571661671. The reversal of 3172571661623 is 3261661752713.

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

It is a cyclic number.

It is not a de Polignac number, because 3172571661623 - 2²² = 3172567467319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172571661673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17431712336 + ... + 17431712517.

It is an arithmetic number, because the mean of its divisors is an integer number (488087947956).

Almost surely, 2^{3172571661623} is an apocalyptic number.

3172571661623 is a deficient number, since it is larger than the sum of its proper divisors (732131922025).

3172571661623 is a wasteful number, since it uses less digits than its factorization.

3172571661623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34863424873.

The product of its digits is 1905120, while the sum is 50.

The spelling of 3172571661623 in words is "three trillion, one hundred seventy-two billion, five hundred seventy-one million, six hundred sixty-one thousand, six hundred twenty-three".