85436380347 has 4 divisors (see below), whose sum is σ = 113915173800. Its totient is φ = 56957586896.

The previous prime is 85436380333. The next prime is 85436380387. The reversal of 85436380347 is 74308363458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85436380347 - 2¹⁰ = 85436379323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85436380347.

It is not an unprimeable number, because it can be changed into a prime (85436380387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14239396722 + ... + 14239396727.

It is an arithmetic number, because the mean of its divisors is an integer number (28478793450).

Almost surely, 2^85436380347 is an apocalyptic number.

85436380347 is a deficient number, since it is larger than the sum of its proper divisors (28478793453).

85436380347 is a wasteful number, since it uses less digits than its factorization.

85436380347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28478793452.

The product of its (nonzero) digits is 5806080, while the sum is 51.

The spelling of 85436380347 in words is "eighty-five billion, four hundred thirty-six million, three hundred eighty thousand, three hundred forty-seven".