86702538809 has 4 divisors (see below), whose sum is σ = 86704235904. Its totient is φ = 86700841716.

The previous prime is 86702538799. The next prime is 86702538817. The reversal of 86702538809 is 90883520768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86702538809 - 2⁸ = 86702538553 is a prime.

It is a super-2 number, since 2×86702538809² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86702535809) 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, 769457 + ... + 874910.

It is an arithmetic number, because the mean of its divisors is an integer number (21676058976).

Almost surely, 2^86702538809 is an apocalyptic number.

It is an amenable number.

86702538809 is a deficient number, since it is larger than the sum of its proper divisors (1697095).

86702538809 is a wasteful number, since it uses less digits than its factorization.

86702538809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697094.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 86702538809 in words is "eighty-six billion, seven hundred two million, five hundred thirty-eight thousand, eight hundred nine".