85604477911 has 2 divisors, whose sum is σ = 85604477912. Its totient is φ = 85604477910.

The previous prime is 85604477897. The next prime is 85604477957. The reversal of 85604477911 is 11977440658.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85604477911 - 2⁵ = 85604477879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85604477011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42802238955 + 42802238956.

It is an arithmetic number, because the mean of its divisors is an integer number (42802238956).

Almost surely, 2^85604477911 is an apocalyptic number.

85604477911 is a deficient number, since it is larger than the sum of its proper divisors (1).

85604477911 is an equidigital number, since it uses as much as digits as its factorization.

85604477911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 85604477911 in words is "eighty-five billion, six hundred four million, four hundred seventy-seven thousand, nine hundred eleven".