86138980591 has 4 divisors (see below), whose sum is σ = 86139699184. Its totient is φ = 86138262000.

The previous prime is 86138980589. The next prime is 86138980651. The reversal of 86138980591 is 19508983168.

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 86138980591 - 2¹ = 86138980589 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 (86138980391) 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, 131235 + ... + 435316.

It is an arithmetic number, because the mean of its divisors is an integer number (21534924796).

Almost surely, 2^86138980591 is an apocalyptic number.

86138980591 is a deficient number, since it is larger than the sum of its proper divisors (718593).

86138980591 is a wasteful number, since it uses less digits than its factorization.

86138980591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718592.

The product of its (nonzero) digits is 3732480, while the sum is 58.

The spelling of 86138980591 in words is "eighty-six billion, one hundred thirty-eight million, nine hundred eighty thousand, five hundred ninety-one".