8639725360749 has 16 divisors (see below), whose sum is σ = 13169276932608. Its totient is φ = 4935492991152.

The previous prime is 8639725360711. The next prime is 8639725360789. The reversal of 8639725360749 is 9470635279368.

It is not a de Polignac number, because 8639725360749 - 2⁹ = 8639725360237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8639725360709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62134287 + ... + 62273180.

It is an arithmetic number, because the mean of its divisors is an integer number (823079808288).

Almost surely, 2^{8639725360749} is an apocalyptic number.

It is an amenable number.

8639725360749 is a deficient number, since it is larger than the sum of its proper divisors (4529551571859).

8639725360749 is a wasteful number, since it uses less digits than its factorization.

8639725360749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124410784.

The product of its (nonzero) digits is 411505920, while the sum is 69.

The spelling of 8639725360749 in words is "eight trillion, six hundred thirty-nine billion, seven hundred twenty-five million, three hundred sixty thousand, seven hundred forty-nine".