86181684497 has 4 divisors (see below), whose sum is σ = 86697742656. Its totient is φ = 85665626340.

The previous prime is 86181684493. The next prime is 86181684517. The reversal of 86181684497 is 79448618168.

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 86181684497 - 2² = 86181684493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86181684493) 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, 258028829 + ... + 258029162.

It is an arithmetic number, because the mean of its divisors is an integer number (21674435664).

Almost surely, 2^86181684497 is an apocalyptic number.

It is an amenable number.

86181684497 is a deficient number, since it is larger than the sum of its proper divisors (516058159).

86181684497 is a wasteful number, since it uses less digits than its factorization.

86181684497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516058158.

The product of its digits is 18579456, while the sum is 62.

The spelling of 86181684497 in words is "eighty-six billion, one hundred eighty-one million, six hundred eighty-four thousand, four hundred ninety-seven".