85247042544 has 50 divisors (see below), whose sum is σ = 246729677040. Its totient is φ = 28415680416.

The previous prime is 85247042513. The next prime is 85247042557. The reversal of 85247042544 is 44524074258.

85247042544 is a `hidden beast` number, since 8 + 524 + 70 + 4 + 2 + 54 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 85247042544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32887224 + ... + 32889815.

Almost surely, 2^85247042544 is an apocalyptic number.

It is an amenable number.

85247042544 is an abundant number, since it is smaller than the sum of its proper divisors (161482634496).

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

85247042544 is a wasteful number, since it uses less digits than its factorization.

85247042544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65777059 (or 65777044 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 45.

The spelling of 85247042544 in words is "eighty-five billion, two hundred forty-seven million, forty-two thousand, five hundred forty-four".