86645809745 has 32 divisors (see below), whose sum is σ = 114475908096. Its totient is φ = 62434091200.

The previous prime is 86645809709. The next prime is 86645809769. The reversal of 86645809745 is 54790854668.

It is not a de Polignac number, because 86645809745 - 2⁶ = 86645809681 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4652342 + ... + 4670928.

It is an arithmetic number, because the mean of its divisors is an integer number (3577372128).

Almost surely, 2^86645809745 is an apocalyptic number.

It is an amenable number.

86645809745 is a deficient number, since it is larger than the sum of its proper divisors (27830098351).

86645809745 is a wasteful number, since it uses less digits than its factorization.

86645809745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19381.

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 86645809745 in words is "eighty-six billion, six hundred forty-five million, eight hundred nine thousand, seven hundred forty-five".