8636856735125 has 36 divisors (see below), whose sum is σ = 11037101948964. Its totient is φ = 6747695673600.

The previous prime is 8636856735103. The next prime is 8636856735127. The reversal of 8636856735125 is 5215376586368.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 2380089904516 + 6256766830609 = 1542754^2 + 2501353^2 .

It is not a de Polignac number, because 8636856735125 - 2¹⁶ = 8636856669589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8636856735127) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1412864069 + ... + 1412870181.

It is an arithmetic number, because the mean of its divisors is an integer number (306586165249).

Almost surely, 2^{8636856735125} is an apocalyptic number.

It is an amenable number.

8636856735125 is a deficient number, since it is larger than the sum of its proper divisors (2400245213839).

8636856735125 is an frugal number, since it uses more digits than its factorization.

8636856735125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12327 (or 6161 counting only the distinct ones).

The product of its digits is 217728000, while the sum is 65.

The spelling of 8636856735125 in words is "eight trillion, six hundred thirty-six billion, eight hundred fifty-six million, seven hundred thirty-five thousand, one hundred twenty-five".