84188675231 has 2 divisors, whose sum is σ = 84188675232. Its totient is φ = 84188675230.

The previous prime is 84188675213. The next prime is 84188675273. The reversal of 84188675231 is 13257688148.

Together with previous prime (84188675213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84188675231 is a prime.

It is a super-2 number, since 2×84188675231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84188575231) 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 as a sum of consecutive naturals, namely, 42094337615 + 42094337616.

It is an arithmetic number, because the mean of its divisors is an integer number (42094337616).

Almost surely, 2^84188675231 is an apocalyptic number.

84188675231 is a deficient number, since it is larger than the sum of its proper divisors (1).

84188675231 is an equidigital number, since it uses as much as digits as its factorization.

84188675231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 53.

The spelling of 84188675231 in words is "eighty-four billion, one hundred eighty-eight million, six hundred seventy-five thousand, two hundred thirty-one".