86643724811670 has 96 divisors (see below), whose sum is σ = 242614302840000. Its totient is φ = 21326642295552.

The previous prime is 86643724811629. The next prime is 86643724811687. The reversal of 86643724811670 is 7611842734668.

86643724811670 is a `hidden beast` number, since 8 + 6 + 6 + 4 + 3 + 72 + 481 + 16 + 70 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 86643724811598 and 86643724811607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22240431 + ... + 25844229.

It is an arithmetic number, because the mean of its divisors is an integer number (2527232321250).

Almost surely, 2^{86643724811670} is an apocalyptic number.

86643724811670 is an abundant number, since it is smaller than the sum of its proper divisors (155970578028330).

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

86643724811670 is a wasteful number, since it uses less digits than its factorization.

86643724811670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624374 (or 3624371 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 86643724811670 in words is "eighty-six trillion, six hundred forty-three billion, seven hundred twenty-four million, eight hundred eleven thousand, six hundred seventy".