85384211777 has 4 divisors (see below), whose sum is σ = 89878117680. Its totient is φ = 80890305876.

The previous prime is 85384211707. The next prime is 85384211813. The reversal of 85384211777 is 77711248358.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85384211777 - 2¹⁰ = 85384210753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85384211707) 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, 2246952923 + ... + 2246952960.

It is an arithmetic number, because the mean of its divisors is an integer number (22469529420).

Almost surely, 2^85384211777 is an apocalyptic number.

It is an amenable number.

85384211777 is a deficient number, since it is larger than the sum of its proper divisors (4493905903).

85384211777 is a wasteful number, since it uses less digits than its factorization.

85384211777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493905902.

The product of its digits is 2634240, while the sum is 53.

The spelling of 85384211777 in words is "eighty-five billion, three hundred eighty-four million, two hundred eleven thousand, seven hundred seventy-seven".