21364610171 has 8 divisors (see below), whose sum is σ = 21718401600. Its totient is φ = 21010933440.

The previous prime is 21364610167. The next prime is 21364610207. The reversal of 21364610171 is 17101646312.

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 21364610171 - 2² = 21364610167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21364630171) 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, 399335 + ... + 449663.

It is an arithmetic number, because the mean of its divisors is an integer number (2714800200).

Almost surely, 2^21364610171 is an apocalyptic number.

21364610171 is a deficient number, since it is larger than the sum of its proper divisors (353791429).

21364610171 is an equidigital number, since it uses as much as digits as its factorization.

21364610171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57349.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 21364610171 in words is "twenty-one billion, three hundred sixty-four million, six hundred ten thousand, one hundred seventy-one".