85247137212500 has 36 divisors (see below), whose sum is σ = 186466178080476. Its totient is φ = 34098854880000.

The previous prime is 85247137212493. The next prime is 85247137212557. The reversal of 85247137212500 is 521273174258.

It can be written as a sum of positive squares in 6 ways, for example, as 73058115139216 + 12189022073284 = 8547404^2 + 3491278^2 .

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 3409872989 + ... + 3409897988.

It is an arithmetic number, because the mean of its divisors is an integer number (5179616057791).

Almost surely, 2^{85247137212500} is an apocalyptic number.

It is an amenable number.

85247137212500 is an abundant number, since it is smaller than the sum of its proper divisors (101219040867976).

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

85247137212500 is an equidigital number, since it uses as much as digits as its factorization.

85247137212500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6819771006 (or 6819770984 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 85247137212500 in words is "eighty-five trillion, two hundred forty-seven billion, one hundred thirty-seven million, two hundred twelve thousand, five hundred".