21604177373371 has 8 divisors (see below), whose sum is σ = 21818793638304. Its totient is φ = 21389575099200.

The previous prime is 21604177373351. The next prime is 21604177373411. The reversal of 21604177373371 is 17337377140612.

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 21604177373371 - 2⁹ = 21604177372859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21604177373351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380271 + ... + 6584296.

It is an arithmetic number, because the mean of its divisors is an integer number (2727349204788).

Almost surely, 2^{21604177373371} is an apocalyptic number.

21604177373371 is a deficient number, since it is larger than the sum of its proper divisors (214616264933).

21604177373371 is a wasteful number, since it uses less digits than its factorization.

21604177373371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6995381.

The product of its (nonzero) digits is 3111696, while the sum is 52.

The spelling of 21604177373371 in words is "twenty-one trillion, six hundred four billion, one hundred seventy-seven million, three hundred seventy-three thousand, three hundred seventy-one".