27721085876573 has 4 divisors (see below), whose sum is σ = 27766754881920. Its totient is φ = 27675416871228.

The previous prime is 27721085876509. The next prime is 27721085876591. The reversal of 27721085876573 is 37567858012772.

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 27721085876573 - 2⁶ = 27721085876509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27721085879573) 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, 22834501763 + ... + 22834502976.

It is an arithmetic number, because the mean of its divisors is an integer number (6941688720480).

Almost surely, 2^{27721085876573} is an apocalyptic number.

It is an amenable number.

27721085876573 is a deficient number, since it is larger than the sum of its proper divisors (45669005347).

27721085876573 is an equidigital number, since it uses as much as digits as its factorization.

27721085876573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45669005346.

The product of its (nonzero) digits is 276595200, while the sum is 68.

The spelling of 27721085876573 in words is "twenty-seven trillion, seven hundred twenty-one billion, eighty-five million, eight hundred seventy-six thousand, five hundred seventy-three".