23171575141621 has 8 divisors (see below), whose sum is σ = 23273245690200. Its totient is φ = 23069908807680.

The previous prime is 23171575141613. The next prime is 23171575141639. The reversal of 23171575141621 is 12614157517132.

It can be written as a sum of positive squares in 4 ways, for example, as 15884895763396 + 7286679378225 = 3985586^2 + 2699385^2 .

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 23171575141621 - 2³ = 23171575141613 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 (23171575141321) 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, 10230741 + ... + 12288661.

It is an arithmetic number, because the mean of its divisors is an integer number (2909155711275).

Almost surely, 2^{23171575141621} is an apocalyptic number.

It is an amenable number.

23171575141621 is a deficient number, since it is larger than the sum of its proper divisors (101670548579).

23171575141621 is a wasteful number, since it uses less digits than its factorization.

23171575141621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107319.

The product of its digits is 352800, while the sum is 46.

The spelling of 23171575141621 in words is "twenty-three trillion, one hundred seventy-one billion, five hundred seventy-five million, one hundred forty-one thousand, six hundred twenty-one".