8136709271249 has 16 divisors (see below), whose sum is σ = 8982394044624. Its totient is φ = 7322669644800.

The previous prime is 8136709271221. The next prime is 8136709271297. The reversal of 8136709271249 is 9421729076318.

It can be written as a sum of positive squares in 8 ways, for example, as 2443069033024 + 5693640238225 = 1563032^2 + 2386135^2 .

It is a cyclic number.

It is not a de Polignac number, because 8136709271249 - 2⁴⁰ = 7037197643473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8136709271549) 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, 4364534 + ... + 5943279.

It is an arithmetic number, because the mean of its divisors is an integer number (561399627789).

Almost surely, 2^{8136709271249} is an apocalyptic number.

It is an amenable number.

8136709271249 is a deficient number, since it is larger than the sum of its proper divisors (845684773375).

8136709271249 is a wasteful number, since it uses less digits than its factorization.

8136709271249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10309348.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 8136709271249 in words is "eight trillion, one hundred thirty-six billion, seven hundred nine million, two hundred seventy-one thousand, two hundred forty-nine".