13220402534344 has 32 divisors (see below), whose sum is σ = 24942286091520. Its totient is φ = 6569144018176.

The previous prime is 13220402534257. The next prime is 13220402534441. The reversal of 13220402534344 is 44343520402231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4853952 + ... + 7071184.

It is an arithmetic number, because the mean of its divisors is an integer number (779446440360).

Almost surely, 2^{13220402534344} is an apocalyptic number.

It is an amenable number.

13220402534344 is a deficient number, since it is larger than the sum of its proper divisors (11721883557176).

13220402534344 is a wasteful number, since it uses less digits than its factorization.

13220402534344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221869 (or 2221865 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 37.

Adding to 13220402534344 its reverse (44343520402231), we get a palindrome (57563922936575).

The spelling of 13220402534344 in words is "thirteen trillion, two hundred twenty billion, four hundred two million, five hundred thirty-four thousand, three hundred forty-four".