1172845111679 has 4 divisors (see below), whose sum is σ = 1176592220976. Its totient is φ = 1169098002384.

The previous prime is 1172845111673. The next prime is 1172845111687. The reversal of 1172845111679 is 9761115482711.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1172845111679 - 2¹⁶ = 1172845046143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1172845111679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172845111673) 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 in 3 ways as a sum of consecutive naturals, for example, 1873554179 + ... + 1873554804.

It is an arithmetic number, because the mean of its divisors is an integer number (294148055244).

Almost surely, 2^{1172845111679} is an apocalyptic number.

1172845111679 is a deficient number, since it is larger than the sum of its proper divisors (3747109297).

1172845111679 is an equidigital number, since it uses as much as digits as its factorization.

1172845111679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747109296.

The product of its digits is 846720, while the sum is 53.

The spelling of 1172845111679 in words is "one trillion, one hundred seventy-two billion, eight hundred forty-five million, one hundred eleven thousand, six hundred seventy-nine".