11611123745 has 16 divisors (see below), whose sum is σ = 15105862800. Its totient is φ = 8516815104.

The previous prime is 11611123681. The next prime is 11611123747. The reversal of 11611123745 is 54732111611.

It can be written as a sum of positive squares in 8 ways, for example, as 3402038929 + 8209084816 = 58327^2 + 90604^2 .

It is a cyclic number.

It is not a de Polignac number, because 11611123745 - 2⁶ = 11611123681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11611123747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589754 + ... + 609123.

It is an arithmetic number, because the mean of its divisors is an integer number (944116425).

Almost surely, 2^11611123745 is an apocalyptic number.

It is an amenable number.

11611123745 is a deficient number, since it is larger than the sum of its proper divisors (3494739055).

11611123745 is a wasteful number, since it uses less digits than its factorization.

11611123745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199044.

The product of its digits is 5040, while the sum is 32.

The spelling of 11611123745 in words is "eleven billion, six hundred eleven million, one hundred twenty-three thousand, seven hundred forty-five".