86861627156329 has 4 divisors (see below), whose sum is σ = 86861676952276. Its totient is φ = 86861577360384.

The previous prime is 86861627156327. The next prime is 86861627156333. The reversal of 86861627156329 is 92365172616868.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18292429611225 + 68569197545104 = 4276965^2 + 8280652^2 .

It is a cyclic number.

It is not a de Polignac number, because 86861627156329 - 2¹ = 86861627156327 is a prime.

It is a super-2 number, since 2×86861627156329² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86861627156327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22182744 + ... + 25803049.

It is an arithmetic number, because the mean of its divisors is an integer number (21715419238069).

Almost surely, 2^{86861627156329} is an apocalyptic number.

It is an amenable number.

86861627156329 is a deficient number, since it is larger than the sum of its proper divisors (49795947).

86861627156329 is a wasteful number, since it uses less digits than its factorization.

86861627156329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49795946.

The product of its digits is 313528320, while the sum is 70.

The spelling of 86861627156329 in words is "eighty-six trillion, eight hundred sixty-one billion, six hundred twenty-seven million, one hundred fifty-six thousand, three hundred twenty-nine".