86106561844 has 12 divisors (see below), whose sum is σ = 150700906468. Its totient is φ = 43049160000.

The previous prime is 86106561817. The next prime is 86106561859. The reversal of 86106561844 is 44816560168.

It can be written as a sum of positive squares in 2 ways, for example, as 19449649444 + 66656912400 = 139462^2 + 258180^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 982977 + ... + 1066984.

Almost surely, 2^86106561844 is an apocalyptic number.

It is an amenable number.

86106561844 is a deficient number, since it is larger than the sum of its proper divisors (64594344624).

86106561844 is a wasteful number, since it uses less digits than its factorization.

86106561844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060466 (or 2060464 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 86106561844 in words is "eighty-six billion, one hundred six million, five hundred sixty-one thousand, eight hundred forty-four".