1145751857491 has 2 divisors, whose sum is σ = 1145751857492. Its totient is φ = 1145751857490.

The previous prime is 1145751857461. The next prime is 1145751857527. The reversal of 1145751857491 is 1947581575411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145751857491 - 2⁹ = 1145751856979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1145751857401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572875928745 + 572875928746.

It is an arithmetic number, because the mean of its divisors is an integer number (572875928746).

Almost surely, 2^{1145751857491} is an apocalyptic number.

1145751857491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145751857491 is an equidigital number, since it uses as much as digits as its factorization.

1145751857491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056000, while the sum is 58.

The spelling of 1145751857491 in words is "one trillion, one hundred forty-five billion, seven hundred fifty-one million, eight hundred fifty-seven thousand, four hundred ninety-one".