85805572778347 has 8 divisors (see below), whose sum is σ = 85835529442080. Its totient is φ = 85775619712320.

The previous prime is 85805572778339. The next prime is 85805572778351. The reversal of 85805572778347 is 74387727550858.

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 85805572778347 - 2³ = 85805572778339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85805572778747) 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, 47258322 + ... + 49040392.

It is an arithmetic number, because the mean of its divisors is an integer number (10729441180260).

Almost surely, 2^{85805572778347} is an apocalyptic number.

85805572778347 is a deficient number, since it is larger than the sum of its proper divisors (29956663733).

85805572778347 is a wasteful number, since it uses less digits than its factorization.

85805572778347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798853.

The product of its (nonzero) digits is 3687936000, while the sum is 76.

The spelling of 85805572778347 in words is "eighty-five trillion, eight hundred five billion, five hundred seventy-two million, seven hundred seventy-eight thousand, three hundred forty-seven".