11523310235405 has 16 divisors (see below), whose sum is σ = 14171189781168. Its totient is φ = 8990025408000.

The previous prime is 11523310235329. The next prime is 11523310235441. The reversal of 11523310235405 is 50453201332511.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2955916841284 + 8567393394121 = 1719278^2 + 2927011^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11523310235405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11316026 + ... + 12292235.

It is an arithmetic number, because the mean of its divisors is an integer number (885699361323).

Almost surely, 2^{11523310235405} is an apocalyptic number.

It is an amenable number.

11523310235405 is a deficient number, since it is larger than the sum of its proper divisors (2647879545763).

11523310235405 is a wasteful number, since it uses less digits than its factorization.

11523310235405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23610688.

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 11523310235405 its reverse (50453201332511), we get a palindrome (61976511567916).

The spelling of 11523310235405 in words is "eleven trillion, five hundred twenty-three billion, three hundred ten million, two hundred thirty-five thousand, four hundred five".