27823275481 has 4 divisors (see below), whose sum is σ = 27853552000. Its totient is φ = 27792998964.

The previous prime is 27823275353. The next prime is 27823275511. The reversal of 27823275481 is 18457232872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27823275481 - 2⁷ = 27823275353 is a prime.

It is a super-2 number, since 2×27823275481² (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 (27893275481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15136881 + ... + 15138718.

It is an arithmetic number, because the mean of its divisors is an integer number (6963388000).

Almost surely, 2^27823275481 is an apocalyptic number.

It is an amenable number.

27823275481 is a deficient number, since it is larger than the sum of its proper divisors (30276519).

27823275481 is an equidigital number, since it uses as much as digits as its factorization.

27823275481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30276518.

The product of its digits is 1505280, while the sum is 49.

The spelling of 27823275481 in words is "twenty-seven billion, eight hundred twenty-three million, two hundred seventy-five thousand, four hundred eighty-one".