1172705078287 has 2 divisors, whose sum is σ = 1172705078288. Its totient is φ = 1172705078286.

The previous prime is 1172705078267. The next prime is 1172705078327. The reversal of 1172705078287 is 7828705072711.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1172705078287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1172705078267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586352539143 + 586352539144.

It is an arithmetic number, because the mean of its divisors is an integer number (586352539144).

Almost surely, 2^{1172705078287} is an apocalyptic number.

1172705078287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172705078287 is an equidigital number, since it uses as much as digits as its factorization.

1172705078287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3073280, while the sum is 55.

The spelling of 1172705078287 in words is "one trillion, one hundred seventy-two billion, seven hundred five million, seventy-eight thousand, two hundred eighty-seven".