21375171565162 has 8 divisors (see below), whose sum is σ = 32223876732000. Its totient is φ = 10633879321164.

The previous prime is 21375171565141. The next prime is 21375171565177. The reversal of 21375171565162 is 26156517157312.

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

It is a super-3 number, since 3×21375171565162³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26853230212 + ... + 26853231007.

It is an arithmetic number, because the mean of its divisors is an integer number (4027984591500).

Almost surely, 2^{21375171565162} is an apocalyptic number.

21375171565162 is a deficient number, since it is larger than the sum of its proper divisors (10848705166838).

21375171565162 is a wasteful number, since it uses less digits than its factorization.

21375171565162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53706461420.

The product of its digits is 2646000, while the sum is 52.

The spelling of 21375171565162 in words is "twenty-one trillion, three hundred seventy-five billion, one hundred seventy-one million, five hundred sixty-five thousand, one hundred sixty-two".