86643170520 has 32 divisors (see below), whose sum is σ = 259929511920. Its totient is φ = 23104845440.

The previous prime is 86643170491. The next prime is 86643170527. The reversal of 86643170520 is 2507134668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86643170527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361013091 + ... + 361013330.

Almost surely, 2^86643170520 is an apocalyptic number.

It is an amenable number.

86643170520 is an abundant number, since it is smaller than the sum of its proper divisors (173286341400).

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

86643170520 is a wasteful number, since it uses less digits than its factorization.

86643170520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722026435 (or 722026431 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 86643170520 in words is "eighty-six billion, six hundred forty-three million, one hundred seventy thousand, five hundred twenty".