20344315444516 has 24 divisors (see below), whose sum is σ = 40689822148416. Its totient is φ = 8718737063520.

The previous prime is 20344315444483. The next prime is 20344315444517. The reversal of 20344315444516 is 61544451344302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20344315444517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9661231 + ... + 11577046.

It is an arithmetic number, because the mean of its divisors is an integer number (1695409256184).

Almost surely, 2^{20344315444516} is an apocalyptic number.

It is an amenable number.

20344315444516 is an abundant number, since it is smaller than the sum of its proper divisors (20345506703900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20344315444516 is a wasteful number, since it uses less digits than its factorization.

20344315444516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21272499 (or 21272497 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 46.

Adding to 20344315444516 its reverse (61544451344302), we get a palindrome (81888766788818).

The spelling of 20344315444516 in words is "twenty trillion, three hundred forty-four billion, three hundred fifteen million, four hundred forty-four thousand, five hundred sixteen".