11345442523 has 4 divisors (see below), whose sum is σ = 11351194848. Its totient is φ = 11339690200.

The previous prime is 11345442487. The next prime is 11345442607. The reversal of 11345442523 is 32524454311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32524454311 = 12647 ⋅2571713.

It is a cyclic number.

It is not a de Polignac number, because 11345442523 - 2²¹ = 11343345371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11345442023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2873203 + ... + 2877148.

It is an arithmetic number, because the mean of its divisors is an integer number (2837798712).

Almost surely, 2^11345442523 is an apocalyptic number.

11345442523 is a deficient number, since it is larger than the sum of its proper divisors (5752325).

11345442523 is an equidigital number, since it uses as much as digits as its factorization.

11345442523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752324.

The product of its digits is 57600, while the sum is 34.

Adding to 11345442523 its reverse (32524454311), we get a palindrome (43869896834).

The spelling of 11345442523 in words is "eleven billion, three hundred forty-five million, four hundred forty-two thousand, five hundred twenty-three".