21114560173 has 8 divisors (see below), whose sum is σ = 24218043392. Its totient is φ = 18032856336.

The previous prime is 21114560171. The next prime is 21114560231. The reversal of 21114560173 is 37106541112.

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 21114560173 - 2¹ = 21114560171 is a prime.

It is the 145309-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114560171) by changing a digit.

It is a nontrivial repunit in base 145308.

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, 5442765 + ... + 5446642.

It is an arithmetic number, because the mean of its divisors is an integer number (3027255424).

Almost surely, 2^21114560173 is an apocalyptic number.

It is an amenable number.

21114560173 is a deficient number, since it is larger than the sum of its proper divisors (3103483219).

21114560173 is a wasteful number, since it uses less digits than its factorization.

21114560173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10889691.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 21114560173 in words is "twenty-one billion, one hundred fourteen million, five hundred sixty thousand, one hundred seventy-three".