85864319551 has 8 divisors (see below), whose sum is σ = 86526990000. Its totient is φ = 85201758720.

The previous prime is 85864319543. The next prime is 85864319687. The reversal of 85864319551 is 15591346858.

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 85864319551 - 2³ = 85864319543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85864319492 and 85864319501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85864319521) 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, 2306655 + ... + 2343583.

It is an arithmetic number, because the mean of its divisors is an integer number (10815873750).

Almost surely, 2^85864319551 is an apocalyptic number.

85864319551 is a deficient number, since it is larger than the sum of its proper divisors (662670449).

85864319551 is a wasteful number, since it uses less digits than its factorization.

85864319551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54809.

The product of its digits is 5184000, while the sum is 55.

The spelling of 85864319551 in words is "eighty-five billion, eight hundred sixty-four million, three hundred nineteen thousand, five hundred fifty-one".