11521746343 has 4 divisors (see below), whose sum is σ = 11660562648. Its totient is φ = 11382930040.

The previous prime is 11521746287. The next prime is 11521746367. The reversal of 11521746343 is 34364712511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11521746343 - 2¹⁷ = 11521615271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521746043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 69408028 + ... + 69408193.

It is an arithmetic number, because the mean of its divisors is an integer number (2915140662).

Almost surely, 2^11521746343 is an apocalyptic number.

11521746343 is a deficient number, since it is larger than the sum of its proper divisors (138816305).

11521746343 is an equidigital number, since it uses as much as digits as its factorization.

11521746343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138816304.

The product of its digits is 60480, while the sum is 37.

The spelling of 11521746343 in words is "eleven billion, five hundred twenty-one million, seven hundred forty-six thousand, three hundred forty-three".