1171547253857 has 2 divisors, whose sum is σ = 1171547253858. Its totient is φ = 1171547253856.

The previous prime is 1171547253827. The next prime is 1171547253859. The reversal of 1171547253857 is 7583527451711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 904688224801 + 266859029056 = 951151^2 + 516584^2 .

It is a cyclic number.

It is not a de Polignac number, because 1171547253857 - 2¹⁰ = 1171547252833 is a prime.

Together with 1171547253859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1171547253859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585773626928 + 585773626929.

It is an arithmetic number, because the mean of its divisors is an integer number (585773626929).

Almost surely, 2^{1171547253857} is an apocalyptic number.

It is an amenable number.

1171547253857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171547253857 is an equidigital number, since it uses as much as digits as its factorization.

1171547253857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8232000, while the sum is 56.

The spelling of 1171547253857 in words is "one trillion, one hundred seventy-one billion, five hundred forty-seven million, two hundred fifty-three thousand, eight hundred fifty-seven".