20314311243440 has 20 divisors (see below), whose sum is σ = 47230773641184. Its totient is φ = 8125724497344.

The previous prime is 20314311243433. The next prime is 20314311243493. The reversal of 20314311243440 is 4434211341302.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 20314311243397 and 20314311243406.

It is an unprimeable number.

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, 126964445192 + ... + 126964445351.

Almost surely, 2^{20314311243440} is an apocalyptic number.

20314311243440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20314311243440 is an abundant number, since it is smaller than the sum of its proper divisors (26916462397744).

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

20314311243440 is a wasteful number, since it uses less digits than its factorization.

20314311243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253928890556 (or 253928890550 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 20314311243440 its reverse (4434211341302), we get a palindrome (24748522584742).

The spelling of 20314311243440 in words is "twenty trillion, three hundred fourteen billion, three hundred eleven million, two hundred forty-three thousand, four hundred forty".