11523354555 has 32 divisors (see below), whose sum is σ = 19932307200. Its totient is φ = 5664961152.

The previous prime is 11523354497. The next prime is 11523354559. The reversal of 11523354555 is 55545332511.

It is not a de Polignac number, because 11523354555 - 2⁹ = 11523354043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11523354559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 535845 + ... + 556934.

It is an arithmetic number, because the mean of its divisors is an integer number (622884600).

Almost surely, 2^11523354555 is an apocalyptic number.

11523354555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11523354555 is a deficient number, since it is larger than the sum of its proper divisors (8408952645).

11523354555 is a wasteful number, since it uses less digits than its factorization.

11523354555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092843.

The product of its digits is 225000, while the sum is 39.

The spelling of 11523354555 in words is "eleven billion, five hundred twenty-three million, three hundred fifty-four thousand, five hundred fifty-five".