86256188217847 has 2 divisors, whose sum is σ = 86256188217848. Its totient is φ = 86256188217846.

The previous prime is 86256188217767. The next prime is 86256188217863. The reversal of 86256188217847 is 74871288165268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86256188217847 - 2²⁷ = 86256054000119 is a prime.

It is a super-4 number, since 4×86256188217847⁴ (a number of 57 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86256188217847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86256188617847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43128094108923 + 43128094108924.

It is an arithmetic number, because the mean of its divisors is an integer number (43128094108924).

Almost surely, 2^{86256188217847} is an apocalyptic number.

86256188217847 is a deficient number, since it is larger than the sum of its proper divisors (1).

86256188217847 is an equidigital number, since it uses as much as digits as its factorization.

86256188217847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 578027520, while the sum is 73.

The spelling of 86256188217847 in words is "eighty-six trillion, two hundred fifty-six billion, one hundred eighty-eight million, two hundred seventeen thousand, eight hundred forty-seven".