27136261097987 has 2 divisors, whose sum is σ = 27136261097988. Its totient is φ = 27136261097986.

The previous prime is 27136261097983. The next prime is 27136261098013. The reversal of 27136261097987 is 78979016263172.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27136261097987 - 2² = 27136261097983 is a prime.

It is not a weakly prime, because it can be changed into another prime (27136261097983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13568130548993 + 13568130548994.

It is an arithmetic number, because the mean of its divisors is an integer number (13568130548994).

Almost surely, 2^{27136261097987} is an apocalyptic number.

27136261097987 is a deficient number, since it is larger than the sum of its proper divisors (1).

27136261097987 is an equidigital number, since it uses as much as digits as its factorization.

27136261097987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96018048, while the sum is 68.

The spelling of 27136261097987 in words is "twenty-seven trillion, one hundred thirty-six billion, two hundred sixty-one million, ninety-seven thousand, nine hundred eighty-seven".