8137531767313 has 4 divisors (see below), whose sum is σ = 8763495749428. Its totient is φ = 7511567785200.

The previous prime is 8137531767307. The next prime is 8137531767317. The reversal of 8137531767313 is 3137671357318.

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 1160051781249 + 6977479986064 = 1077057^2 + 2641492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8137531767313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8137531767317) 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, 312981991038 + ... + 312981991063.

It is an arithmetic number, because the mean of its divisors is an integer number (2190873937357).

Almost surely, 2^{8137531767313} is an apocalyptic number.

It is an amenable number.

8137531767313 is a deficient number, since it is larger than the sum of its proper divisors (625963982115).

8137531767313 is a wasteful number, since it uses less digits than its factorization.

8137531767313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625963982114.

The product of its digits is 6667920, while the sum is 55.

The spelling of 8137531767313 in words is "eight trillion, one hundred thirty-seven billion, five hundred thirty-one million, seven hundred sixty-seven thousand, three hundred thirteen".