85861252447 has 8 divisors (see below), whose sum is σ = 89737678800. Its totient is φ = 82045872384.

The previous prime is 85861252439. The next prime is 85861252469. The reversal of 85861252447 is 74425216858.

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

It is a cyclic number.

It is not a de Polignac number, because 85861252447 - 2³ = 85861252439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85861252394 and 85861252403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85861252417) 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, 15258697 + ... + 15264322.

It is an arithmetic number, because the mean of its divisors is an integer number (11217209850).

Almost surely, 2^85861252447 is an apocalyptic number.

85861252447 is a deficient number, since it is larger than the sum of its proper divisors (3876426353).

85861252447 is a wasteful number, since it uses less digits than its factorization.

85861252447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30523145.

The product of its digits is 4300800, while the sum is 52.

The spelling of 85861252447 in words is "eighty-five billion, eight hundred sixty-one million, two hundred fifty-two thousand, four hundred forty-seven".