85172430397792 has 48 divisors (see below), whose sum is σ = 177547838805792. Its totient is φ = 40080941107200.

The previous prime is 85172430397787. The next prime is 85172430397801. The reversal of 85172430397792 is 29779303427158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212146042 + ... + 212547142.

It is an arithmetic number, because the mean of its divisors is an integer number (3698913308454).

Almost surely, 2^{85172430397792} is an apocalyptic number.

It is an amenable number.

85172430397792 is an abundant number, since it is smaller than the sum of its proper divisors (92375408408000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85172430397792 is a wasteful number, since it uses less digits than its factorization.

85172430397792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791471 (or 791463 counting only the distinct ones).

The product of its (nonzero) digits is 160030080, while the sum is 67.

The spelling of 85172430397792 in words is "eighty-five trillion, one hundred seventy-two billion, four hundred thirty million, three hundred ninety-seven thousand, seven hundred ninety-two".