1172750113891 has 2 divisors, whose sum is σ = 1172750113892. Its totient is φ = 1172750113890.

The previous prime is 1172750113879. The next prime is 1172750113897. The reversal of 1172750113891 is 1983110572711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1172750113891 - 2¹⁹ = 1172749589603 is a prime.

It is not a weakly prime, because it can be changed into another prime (1172750113897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586375056945 + 586375056946.

It is an arithmetic number, because the mean of its divisors is an integer number (586375056946).

Almost surely, 2^{1172750113891} is an apocalyptic number.

1172750113891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172750113891 is an equidigital number, since it uses as much as digits as its factorization.

1172750113891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 46.

The spelling of 1172750113891 in words is "one trillion, one hundred seventy-two billion, seven hundred fifty million, one hundred thirteen thousand, eight hundred ninety-one".