86138786287 has 4 divisors (see below), whose sum is σ = 88239732336. Its totient is φ = 84037840240.

The previous prime is 86138786281. The next prime is 86138786299. The reversal of 86138786287 is 78268783168.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 86138786287 - 2¹⁹ = 86138261999 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 (86138786281) 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, 1050472963 + ... + 1050473044.

It is an arithmetic number, because the mean of its divisors is an integer number (22059933084).

Almost surely, 2^86138786287 is an apocalyptic number.

86138786287 is a deficient number, since it is larger than the sum of its proper divisors (2100946049).

86138786287 is a wasteful number, since it uses less digits than its factorization.

86138786287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100946048.

The product of its digits is 43352064, while the sum is 64.

The spelling of 86138786287 in words is "eighty-six billion, one hundred thirty-eight million, seven hundred eighty-six thousand, two hundred eighty-seven".