11523140146445 has 16 divisors (see below), whose sum is σ = 13861741440240. Its totient is φ = 9195885901824.

The previous prime is 11523140146439. The next prime is 11523140146519. The reversal of 11523140146445 is 54464104132511.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 547946374756 + 10975193771689 = 740234^2 + 3312883^2 .

It is a cyclic number.

It is not a de Polignac number, because 11523140146445 - 2⁶ = 11523140146381 is a prime.

It is a super-2 number, since 2×11523140146445² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2663657 + ... + 5490113.

It is an arithmetic number, because the mean of its divisors is an integer number (866358840015).

Almost surely, 2^{11523140146445} is an apocalyptic number.

It is an amenable number.

11523140146445 is a deficient number, since it is larger than the sum of its proper divisors (2338601293795).

11523140146445 is a wasteful number, since it uses less digits than its factorization.

11523140146445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828464.

The product of its (nonzero) digits is 230400, while the sum is 41.

Adding to 11523140146445 its reverse (54464104132511), we get a palindrome (65987244278956).

The spelling of 11523140146445 in words is "eleven trillion, five hundred twenty-three billion, one hundred forty million, one hundred forty-six thousand, four hundred forty-five".