11205451340523 has 24 divisors (see below), whose sum is σ = 18032757290496. Its totient is φ = 6646689380400.

The previous prime is 11205451340497. The next prime is 11205451340527. The reversal of 11205451340523 is 32504315450211.

11205451340523 is a `hidden beast` number, since 1 + 1 + 2 + 0 + 54 + 51 + 34 + 0 + 523 = 666.

It is not a de Polignac number, because 11205451340523 - 2⁸ = 11205451340267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11205451340527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1204105743 + ... + 1204115048.

It is an arithmetic number, because the mean of its divisors is an integer number (751364887104).

Almost surely, 2^{11205451340523} is an apocalyptic number.

11205451340523 is a deficient number, since it is larger than the sum of its proper divisors (6827305949973).

11205451340523 is a wasteful number, since it uses less digits than its factorization.

11205451340523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408220855 (or 2408220852 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 11205451340523 its reverse (32504315450211), we get a palindrome (43709766790734).

The spelling of 11205451340523 in words is "eleven trillion, two hundred five billion, four hundred fifty-one million, three hundred forty thousand, five hundred twenty-three".