27331529987 has 2 divisors, whose sum is σ = 27331529988. Its totient is φ = 27331529986.

The previous prime is 27331529983. The next prime is 27331530013. The reversal of 27331529987 is 78992513372.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27331529987 - 2² = 27331529983 is a prime.

It is not a weakly prime, because it can be changed into another prime (27331529983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13665764993 + 13665764994.

It is an arithmetic number, because the mean of its divisors is an integer number (13665764994).

Almost surely, 2^27331529987 is an apocalyptic number.

27331529987 is a deficient number, since it is larger than the sum of its proper divisors (1).

27331529987 is an equidigital number, since it uses as much as digits as its factorization.

27331529987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 56.

The spelling of 27331529987 in words is "twenty-seven billion, three hundred thirty-one million, five hundred twenty-nine thousand, nine hundred eighty-seven".