8127968787131 has 2 divisors, whose sum is σ = 8127968787132. Its totient is φ = 8127968787130.

The previous prime is 8127968787097. The next prime is 8127968787173. The reversal of 8127968787131 is 1317878697218.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8127968787131 is a prime.

It is a super-2 number, since 2×8127968787131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8127968787181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4063984393565 + 4063984393566.

It is an arithmetic number, because the mean of its divisors is an integer number (4063984393566).

Almost surely, 2^{8127968787131} is an apocalyptic number.

8127968787131 is a deficient number, since it is larger than the sum of its proper divisors (1).

8127968787131 is an equidigital number, since it uses as much as digits as its factorization.

8127968787131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56899584, while the sum is 68.

The spelling of 8127968787131 in words is "eight trillion, one hundred twenty-seven billion, nine hundred sixty-eight million, seven hundred eighty-seven thousand, one hundred thirty-one".