1268241577139 has 2 divisors, whose sum is σ = 1268241577140. Its totient is φ = 1268241577138.

The previous prime is 1268241577111. The next prime is 1268241577217. The reversal of 1268241577139 is 9317751428621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1268241577139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1268241577039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634120788569 + 634120788570.

It is an arithmetic number, because the mean of its divisors is an integer number (634120788570).

Almost surely, 2^{1268241577139} is an apocalyptic number.

1268241577139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268241577139 is an equidigital number, since it uses as much as digits as its factorization.

1268241577139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 56.

The spelling of 1268241577139 in words is "one trillion, two hundred sixty-eight billion, two hundred forty-one million, five hundred seventy-seven thousand, one hundred thirty-nine".