1174263232561 has 4 divisors (see below), whose sum is σ = 1177281904500. Its totient is φ = 1171244560624.

The previous prime is 1174263232553. The next prime is 1174263232591. The reversal of 1174263232561 is 1652323624711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 411322126336 + 762941106225 = 641344^2 + 873465^2 .

It is a cyclic number.

It is not a de Polignac number, because 1174263232561 - 2³ = 1174263232553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1174263232591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1509335386 + ... + 1509336163.

It is an arithmetic number, because the mean of its divisors is an integer number (294320476125).

Almost surely, 2^{1174263232561} is an apocalyptic number.

It is an amenable number.

1174263232561 is a deficient number, since it is larger than the sum of its proper divisors (3018671939).

1174263232561 is an equidigital number, since it uses as much as digits as its factorization.

1174263232561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018671938.

The product of its digits is 362880, while the sum is 43.

The spelling of 1174263232561 in words is "one trillion, one hundred seventy-four billion, two hundred sixty-three million, two hundred thirty-two thousand, five hundred sixty-one".