21127273174 has 16 divisors (see below), whose sum is σ = 38124403200. Its totient is φ = 8577990504.

The previous prime is 21127273151. The next prime is 21127273177. The reversal of 21127273174 is 47137272112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21127273177) 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, 39712654 + ... + 39713185.

It is an arithmetic number, because the mean of its divisors is an integer number (2382775200).

Almost surely, 2^21127273174 is an apocalyptic number.

21127273174 is a deficient number, since it is larger than the sum of its proper divisors (16997130026).

21127273174 is a wasteful number, since it uses less digits than its factorization.

21127273174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79425867.

The product of its digits is 32928, while the sum is 37.

The spelling of 21127273174 in words is "twenty-one billion, one hundred twenty-seven million, two hundred seventy-three thousand, one hundred seventy-four".