86257807369 has 2 divisors, whose sum is σ = 86257807370. Its totient is φ = 86257807368.

The previous prime is 86257807357. The next prime is 86257807399. The reversal of 86257807369 is 96370875268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62094659344 + 24163148025 = 249188^2 + 155445^2 .

It is a cyclic number.

It is not a de Polignac number, because 86257807369 - 2²¹ = 86255710217 is a prime.

It is a super-2 number, since 2×86257807369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86257807399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43128903684 + 43128903685.

It is an arithmetic number, because the mean of its divisors is an integer number (43128903685).

Almost surely, 2^86257807369 is an apocalyptic number.

It is an amenable number.

86257807369 is a deficient number, since it is larger than the sum of its proper divisors (1).

86257807369 is an equidigital number, since it uses as much as digits as its factorization.

86257807369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 86257807369 in words is "eighty-six billion, two hundred fifty-seven million, eight hundred seven thousand, three hundred sixty-nine".