27240074887 has 2 divisors, whose sum is σ = 27240074888. Its totient is φ = 27240074886.

The previous prime is 27240074861. The next prime is 27240074977. The reversal of 27240074887 is 78847004272.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27240074887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27240074887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27240074837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13620037443 + 13620037444.

It is an arithmetic number, because the mean of its divisors is an integer number (13620037444).

Almost surely, 2^27240074887 is an apocalyptic number.

27240074887 is a deficient number, since it is larger than the sum of its proper divisors (1).

27240074887 is an equidigital number, since it uses as much as digits as its factorization.

27240074887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1404928, while the sum is 49.

The spelling of 27240074887 in words is "twenty-seven billion, two hundred forty million, seventy-four thousand, eight hundred eighty-seven".