86075643637 has 2 divisors, whose sum is σ = 86075643638. Its totient is φ = 86075643636.

The previous prime is 86075643587. The next prime is 86075643653. The reversal of 86075643637 is 73634657068.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47121121476 + 38954522161 = 217074^2 + 197369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86075643637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86075643037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43037821818 + 43037821819.

It is an arithmetic number, because the mean of its divisors is an integer number (43037821819).

Almost surely, 2^86075643637 is an apocalyptic number.

It is an amenable number.

86075643637 is a deficient number, since it is larger than the sum of its proper divisors (1).

86075643637 is an equidigital number, since it uses as much as digits as its factorization.

86075643637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 55.

The spelling of 86075643637 in words is "eighty-six billion, seventy-five million, six hundred forty-three thousand, six hundred thirty-seven".