85186197438811 has 4 divisors (see below), whose sum is σ = 97355654215792. Its totient is φ = 73016740661832.

The previous prime is 85186197438809. The next prime is 85186197438847. The reversal of 85186197438811 is 11883479168158.

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 85186197438811 - 2¹ = 85186197438809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85186197438011) 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, 6084728388480 + ... + 6084728388493.

It is an arithmetic number, because the mean of its divisors is an integer number (24338913553948).

Almost surely, 2^{85186197438811} is an apocalyptic number.

85186197438811 is a deficient number, since it is larger than the sum of its proper divisors (12169456776981).

85186197438811 is a wasteful number, since it uses less digits than its factorization.

85186197438811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12169456776980.

The product of its digits is 92897280, while the sum is 70.

The spelling of 85186197438811 in words is "eighty-five trillion, one hundred eighty-six billion, one hundred ninety-seven million, four hundred thirty-eight thousand, eight hundred eleven".