84642186287 has 4 divisors (see below), whose sum is σ = 84653937936. Its totient is φ = 84630434640.

The previous prime is 84642186283. The next prime is 84642186373. The reversal of 84642186287 is 78268124648.

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 84642186287 - 2² = 84642186283 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 (84642186283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5865014 + ... + 5879427.

It is an arithmetic number, because the mean of its divisors is an integer number (21163484484).

Almost surely, 2^84642186287 is an apocalyptic number.

84642186287 is a deficient number, since it is larger than the sum of its proper divisors (11751649).

84642186287 is a wasteful number, since it uses less digits than its factorization.

84642186287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11751648.

The product of its digits is 8257536, while the sum is 56.

The spelling of 84642186287 in words is "eighty-four billion, six hundred forty-two million, one hundred eighty-six thousand, two hundred eighty-seven".