86645809746 has 24 divisors (see below), whose sum is σ = 198775681884. Its totient is φ = 27182999040.

The previous prime is 86645809709. The next prime is 86645809769. The reversal of 86645809746 is 64790854668.

86645809746 is a `hidden beast` number, since 8 + 6 + 6 + 4 + 580 + 9 + 7 + 46 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 68207157225 + 18438652521 = 261165^2 + 135789^2 .

It is a super-3 number, since 3×86645809746³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141577815 + ... + 141578426.

Almost surely, 2^86645809746 is an apocalyptic number.

86645809746 is an abundant number, since it is smaller than the sum of its proper divisors (112129872138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86645809746 is a wasteful number, since it uses less digits than its factorization.

86645809746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283156266 (or 283156263 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 86645809746 in words is "eighty-six billion, six hundred forty-five million, eight hundred nine thousand, seven hundred forty-six".