85816176345787 has 2 divisors, whose sum is σ = 85816176345788. Its totient is φ = 85816176345786.

The previous prime is 85816176345737. The next prime is 85816176345899. The reversal of 85816176345787 is 78754367161858.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85816176345787 is a prime.

It is a super-2 number, since 2×85816176345787² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85816176345737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42908088172893 + 42908088172894.

It is an arithmetic number, because the mean of its divisors is an integer number (42908088172894).

Almost surely, 2^{85816176345787} is an apocalyptic number.

85816176345787 is a deficient number, since it is larger than the sum of its proper divisors (1).

85816176345787 is an equidigital number, since it uses as much as digits as its factorization.

85816176345787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1896652800, while the sum is 76.

The spelling of 85816176345787 in words is "eighty-five trillion, eight hundred sixteen billion, one hundred seventy-six million, three hundred forty-five thousand, seven hundred eighty-seven".