85011211013 has 2 divisors, whose sum is σ = 85011211014. Its totient is φ = 85011211012.

The previous prime is 85011211009. The next prime is 85011211027. The reversal of 85011211013 is 31011211058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82896774724 + 2114436289 = 287918^2 + 45983^2 .

It is a cyclic number.

It is not a de Polignac number, because 85011211013 - 2² = 85011211009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85011211013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85011210013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42505605506 + 42505605507.

It is an arithmetic number, because the mean of its divisors is an integer number (42505605507).

Almost surely, 2^85011211013 is an apocalyptic number.

It is an amenable number.

85011211013 is a deficient number, since it is larger than the sum of its proper divisors (1).

85011211013 is an equidigital number, since it uses as much as digits as its factorization.

85011211013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 23.

The spelling of 85011211013 in words is "eighty-five billion, eleven million, two hundred eleven thousand, thirteen".