1123945557817 has 8 divisors (see below), whose sum is σ = 1163035463040. Its totient is φ = 1084877863440.

The previous prime is 1123945557799. The next prime is 1123945557829. The reversal of 1123945557817 is 7187555493211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123945557817 - 2⁷ = 1123945557689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123945557857) 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 7 ways as a sum of consecutive naturals, for example, 5449713 + ... + 5652190.

It is an arithmetic number, because the mean of its divisors is an integer number (145379432880).

Almost surely, 2^{1123945557817} is an apocalyptic number.

It is an amenable number.

1123945557817 is a deficient number, since it is larger than the sum of its proper divisors (39089905223).

1123945557817 is a wasteful number, since it uses less digits than its factorization.

1123945557817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105423.

The product of its digits is 10584000, while the sum is 58.

The spelling of 1123945557817 in words is "one trillion, one hundred twenty-three billion, nine hundred forty-five million, five hundred fifty-seven thousand, eight hundred seventeen".