1427847385891 has 2 divisors, whose sum is σ = 1427847385892. Its totient is φ = 1427847385890.

The previous prime is 1427847385807. The next prime is 1427847385901. The reversal of 1427847385891 is 1985837487241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1427847385891 - 2²⁹ = 1427310514979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1427847380891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713923692945 + 713923692946.

It is an arithmetic number, because the mean of its divisors is an integer number (713923692946).

Almost surely, 2^{1427847385891} is an apocalyptic number.

1427847385891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427847385891 is an equidigital number, since it uses as much as digits as its factorization.

1427847385891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108380160, while the sum is 67.

The spelling of 1427847385891 in words is "one trillion, four hundred twenty-seven billion, eight hundred forty-seven million, three hundred eighty-five thousand, eight hundred ninety-one".