86785638055 has 4 divisors (see below), whose sum is σ = 104142765672. Its totient is φ = 69428510440.

The previous prime is 86785638031. The next prime is 86785638073. The reversal of 86785638055 is 55083658768.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-86785638055 is a prime.

It is a super-2 number, since 2×86785638055² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86785637984 and 86785638002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8678563801 + ... + 8678563810.

It is an arithmetic number, because the mean of its divisors is an integer number (26035691418).

Almost surely, 2^86785638055 is an apocalyptic number.

86785638055 is a deficient number, since it is larger than the sum of its proper divisors (17357127617).

86785638055 is a wasteful number, since it uses less digits than its factorization.

86785638055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17357127616.

The product of its (nonzero) digits is 48384000, while the sum is 61.

The spelling of 86785638055 in words is "eighty-six billion, seven hundred eighty-five million, six hundred thirty-eight thousand, fifty-five".