86857704787583 has 4 divisors (see below), whose sum is σ = 86872554802800. Its totient is φ = 86842854772368.

The previous prime is 86857704787531. The next prime is 86857704787673. The reversal of 86857704787583 is 38578740775868.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 86857704787583 - 2²⁶ = 86857637678719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86857704786583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7424998835 + ... + 7425010532.

It is an arithmetic number, because the mean of its divisors is an integer number (21718138700700).

Almost surely, 2^{86857704787583} is an apocalyptic number.

86857704787583 is a deficient number, since it is larger than the sum of its proper divisors (14850015217).

86857704787583 is a wasteful number, since it uses less digits than its factorization.

86857704787583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14850015216.

The product of its (nonzero) digits is 17702092800, while the sum is 83.

The spelling of 86857704787583 in words is "eighty-six trillion, eight hundred fifty-seven billion, seven hundred four million, seven hundred eighty-seven thousand, five hundred eighty-three".