27064712021 has 4 divisors (see below), whose sum is σ = 27071131200. Its totient is φ = 27058292844.

The previous prime is 27064711969. The next prime is 27064712027. The reversal of 27064712021 is 12021746072.

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 27064712021 - 2⁶ = 27064711957 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 (27064712027) 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, 3203261 + ... + 3211698.

It is an arithmetic number, because the mean of its divisors is an integer number (6767782800).

Almost surely, 2^27064712021 is an apocalyptic number.

It is an amenable number.

27064712021 is a deficient number, since it is larger than the sum of its proper divisors (6419179).

27064712021 is an equidigital number, since it uses as much as digits as its factorization.

27064712021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6419178.

The product of its (nonzero) digits is 9408, while the sum is 32.

The spelling of 27064712021 in words is "twenty-seven billion, sixty-four million, seven hundred twelve thousand, twenty-one".