27263392987 has 2 divisors, whose sum is σ = 27263392988. Its totient is φ = 27263392986.

The previous prime is 27263392963. The next prime is 27263393033. The reversal of 27263392987 is 78929336272.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27263392987 is a prime.

It is not a weakly prime, because it can be changed into another prime (27263396987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13631696493 + 13631696494.

It is an arithmetic number, because the mean of its divisors is an integer number (13631696494).

Almost surely, 2^27263392987 is an apocalyptic number.

27263392987 is a deficient number, since it is larger than the sum of its proper divisors (1).

27263392987 is an equidigital number, since it uses as much as digits as its factorization.

27263392987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 58.

The spelling of 27263392987 in words is "twenty-seven billion, two hundred sixty-three million, three hundred ninety-two thousand, nine hundred eighty-seven".