86256220235705 has 8 divisors (see below), whose sum is σ = 111469576920072. Its totient is φ = 63696901097088.

The previous prime is 86256220235687. The next prime is 86256220235729. The reversal of 86256220235705 is 50753202265268.

It can be written as a sum of positive squares in 4 ways, for example, as 4337501832889 + 81918718402816 = 2082667^2 + 9050896^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86256220235705 - 2¹² = 86256220231609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663509386364 + ... + 663509386493.

It is an arithmetic number, because the mean of its divisors is an integer number (13933697115009).

Almost surely, 2^{86256220235705} is an apocalyptic number.

It is an amenable number.

86256220235705 is a deficient number, since it is larger than the sum of its proper divisors (25213356684367).

86256220235705 is a wasteful number, since it uses less digits than its factorization.

86256220235705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327018772875.

The product of its (nonzero) digits is 12096000, while the sum is 53.

The spelling of 86256220235705 in words is "eighty-six trillion, two hundred fifty-six billion, two hundred twenty million, two hundred thirty-five thousand, seven hundred five".