86855487705 has 48 divisors (see below), whose sum is σ = 176486701440. Its totient is φ = 39701224224.

The previous prime is 86855487679. The next prime is 86855487743. The reversal of 86855487705 is 50778455868.

86855487705 is a `hidden beast` number, since 8 + 6 + 8 + 554 + 8 + 7 + 70 + 5 = 666.

It is not a de Polignac number, because 86855487705 - 2⁸ = 86855487449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9054922 + ... + 9064508.

It is an arithmetic number, because the mean of its divisors is an integer number (3676806280).

Almost surely, 2^86855487705 is an apocalyptic number.

It is an amenable number.

86855487705 is an abundant number, since it is smaller than the sum of its proper divisors (89631213735).

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

86855487705 is an frugal number, since it uses more digits than its factorization.

86855487705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19195 (or 9602 counting only the distinct ones).

The product of its (nonzero) digits is 75264000, while the sum is 63.

The spelling of 86855487705 in words is "eighty-six billion, eight hundred fifty-five million, four hundred eighty-seven thousand, seven hundred five".