86169803642 has 32 divisors (see below), whose sum is σ = 140511118608. Its totient is φ = 39395736576.

The previous prime is 86169803639. The next prime is 86169803659. The reversal of 86169803642 is 24630896168.

It can be written as a sum of positive squares in 8 ways, for example, as 28338692281 + 57831111361 = 168341^2 + 240481^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5671568 + ... + 5686740.

Almost surely, 2^86169803642 is an apocalyptic number.

86169803642 is a deficient number, since it is larger than the sum of its proper divisors (54341314966).

86169803642 is a wasteful number, since it uses less digits than its factorization.

86169803642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17234.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 86169803642 in words is "eighty-six billion, one hundred sixty-nine million, eight hundred three thousand, six hundred forty-two".