27872122481 has 16 divisors (see below), whose sum is σ = 32341755648. Its totient is φ = 23525510400.

The previous prime is 27872122469. The next prime is 27872122511. The reversal of 27872122481 is 18422127872.

It is a de Polignac number, because none of the positive numbers 2^k-27872122481 is a prime.

It is a super-2 number, since 2×27872122481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27872122441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279221 + ... + 365661.

It is an arithmetic number, because the mean of its divisors is an integer number (2021359728).

Almost surely, 2^27872122481 is an apocalyptic number.

It is an amenable number.

27872122481 is a deficient number, since it is larger than the sum of its proper divisors (4469633167).

27872122481 is an equidigital number, since it uses as much as digits as its factorization.

27872122481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87152.

The product of its digits is 200704, while the sum is 44.

The spelling of 27872122481 in words is "twenty-seven billion, eight hundred seventy-two million, one hundred twenty-two thousand, four hundred eighty-one".