84605064811 has 4 divisors (see below), whose sum is σ = 85477282072. Its totient is φ = 83732847552.

The previous prime is 84605064779. The next prime is 84605064827. The reversal of 84605064811 is 11846050648.

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 84605064811 - 2⁵ = 84605064779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84605064611) 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, 436108485 + ... + 436108678.

It is an arithmetic number, because the mean of its divisors is an integer number (21369320518).

Almost surely, 2^84605064811 is an apocalyptic number.

84605064811 is a deficient number, since it is larger than the sum of its proper divisors (872217261).

84605064811 is an equidigital number, since it uses as much as digits as its factorization.

84605064811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872217260.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 84605064811 in words is "eighty-four billion, six hundred five million, sixty-four thousand, eight hundred eleven".