85155243827 has 2 divisors, whose sum is σ = 85155243828. Its totient is φ = 85155243826.

The previous prime is 85155243787. The next prime is 85155243857. The reversal of 85155243827 is 72834255158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85155243827 - 2¹² = 85155239731 is a prime.

It is not a weakly prime, because it can be changed into another prime (85155243857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42577621913 + 42577621914.

It is an arithmetic number, because the mean of its divisors is an integer number (42577621914).

Almost surely, 2^85155243827 is an apocalyptic number.

85155243827 is a deficient number, since it is larger than the sum of its proper divisors (1).

85155243827 is an equidigital number, since it uses as much as digits as its factorization.

85155243827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688000, while the sum is 50.

The spelling of 85155243827 in words is "eighty-five billion, one hundred fifty-five million, two hundred forty-three thousand, eight hundred twenty-seven".