86842862647 has 4 divisors (see below), whose sum is σ = 86847729136. Its totient is φ = 86837996160.

The previous prime is 86842862629. The next prime is 86842862657. The reversal of 86842862647 is 74626824868.

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-86842862647 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 (86842862657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2406378 + ... + 2442199.

It is an arithmetic number, because the mean of its divisors is an integer number (21711932284).

Almost surely, 2^86842862647 is an apocalyptic number.

86842862647 is a deficient number, since it is larger than the sum of its proper divisors (4866489).

86842862647 is a wasteful number, since it uses less digits than its factorization.

86842862647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866488.

The product of its digits is 49545216, while the sum is 61.

The spelling of 86842862647 in words is "eighty-six billion, eight hundred forty-two million, eight hundred sixty-two thousand, six hundred forty-seven".