85494172729 has 8 divisors (see below), whose sum is σ = 100348372928. Its totient is φ = 71300159280.

The previous prime is 85494172691. The next prime is 85494172739. The reversal of 85494172729 is 92727149458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85494172729 - 2⁷ = 85494172601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85494172739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165046407 + ... + 165046924.

It is an arithmetic number, because the mean of its divisors is an integer number (12543546616).

Almost surely, 2^85494172729 is an apocalyptic number.

It is an amenable number.

85494172729 is a deficient number, since it is larger than the sum of its proper divisors (14854200199).

85494172729 is a wasteful number, since it uses less digits than its factorization.

85494172729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330093375.

The product of its digits is 10160640, while the sum is 58.

The spelling of 85494172729 in words is "eighty-five billion, four hundred ninety-four million, one hundred seventy-two thousand, seven hundred twenty-nine".