86043840269 has 2 divisors, whose sum is σ = 86043840270. Its totient is φ = 86043840268.

The previous prime is 86043840257. The next prime is 86043840277. The reversal of 86043840269 is 96204834068.

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., 55641733225 + 30402107044 = 235885^2 + 174362^2 .

It is a cyclic number.

It is not a de Polignac number, because 86043840269 - 2¹² = 86043836173 is a prime.

It is a super-2 number, since 2×86043840269² (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 (86043840469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43021920134 + 43021920135.

It is an arithmetic number, because the mean of its divisors is an integer number (43021920135).

Almost surely, 2^86043840269 is an apocalyptic number.

It is an amenable number.

86043840269 is a deficient number, since it is larger than the sum of its proper divisors (1).

86043840269 is an equidigital number, since it uses as much as digits as its factorization.

86043840269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 86043840269 in words is "eighty-six billion, forty-three million, eight hundred forty thousand, two hundred sixty-nine".