85347174547 has 2 divisors, whose sum is σ = 85347174548. Its totient is φ = 85347174546.

The previous prime is 85347174529. The next prime is 85347174571. The reversal of 85347174547 is 74547174358.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85347174547 is a prime.

It is not a weakly prime, because it can be changed into another prime (85347114547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42673587273 + 42673587274.

It is an arithmetic number, because the mean of its divisors is an integer number (42673587274).

Almost surely, 2^85347174547 is an apocalyptic number.

85347174547 is a deficient number, since it is larger than the sum of its proper divisors (1).

85347174547 is an equidigital number, since it uses as much as digits as its factorization.

85347174547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13171200, while the sum is 55.

The spelling of 85347174547 in words is "eighty-five billion, three hundred forty-seven million, one hundred seventy-four thousand, five hundred forty-seven".