86169754091 has 4 divisors (see below), whose sum is σ = 86170486872. Its totient is φ = 86169021312.

The previous prime is 86169754063. The next prime is 86169754093. The reversal of 86169754091 is 19045796168.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 86169754091 - 2¹⁰ = 86169753067 is a prime.

It is a super-2 number, since 2×86169754091² (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 (86169754093) 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, 145685 + ... + 439958.

It is an arithmetic number, because the mean of its divisors is an integer number (21542621718).

Almost surely, 2^86169754091 is an apocalyptic number.

86169754091 is a deficient number, since it is larger than the sum of its proper divisors (732781).

86169754091 is a wasteful number, since it uses less digits than its factorization.

86169754091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732780.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 86169754091 in words is "eighty-six billion, one hundred sixty-nine million, seven hundred fifty-four thousand, ninety-one".