27164132987 has 4 divisors (see below), whose sum is σ = 27172151760. Its totient is φ = 27156114216.

The previous prime is 27164132981. The next prime is 27164133001. The reversal of 27164132987 is 78923146172.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27164132987 - 2⁶ = 27164132923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27164132981) 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, 4004303 + ... + 4011080.

It is an arithmetic number, because the mean of its divisors is an integer number (6793037940).

Almost surely, 2^27164132987 is an apocalyptic number.

27164132987 is a deficient number, since it is larger than the sum of its proper divisors (8018773).

27164132987 is an equidigital number, since it uses as much as digits as its factorization.

27164132987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8018772.

The product of its digits is 1016064, while the sum is 50.

The spelling of 27164132987 in words is "twenty-seven billion, one hundred sixty-four million, one hundred thirty-two thousand, nine hundred eighty-seven".