86288415491 has 4 divisors (see below), whose sum is σ = 88295122872. Its totient is φ = 84281708112.

The previous prime is 86288415457. The next prime is 86288415509. The reversal of 86288415491 is 19451488268.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86288415491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86288415991) 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, 1003353626 + ... + 1003353711.

It is an arithmetic number, because the mean of its divisors is an integer number (22073780718).

Almost surely, 2^86288415491 is an apocalyptic number.

86288415491 is a deficient number, since it is larger than the sum of its proper divisors (2006707381).

86288415491 is a wasteful number, since it uses less digits than its factorization.

86288415491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006707380.

The product of its digits is 4423680, while the sum is 56.

The spelling of 86288415491 in words is "eighty-six billion, two hundred eighty-eight million, four hundred fifteen thousand, four hundred ninety-one".