13311212343440 has 80 divisors (see below), whose sum is σ = 34071818996160. Its totient is φ = 4796033103360.

The previous prime is 13311212343427. The next prime is 13311212343463. The reversal of 13311212343440 is 4434321211331.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×13311212343440² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13311212343397 and 13311212343406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69291134 + ... + 69482973.

It is an arithmetic number, because the mean of its divisors is an integer number (425897737452).

Almost surely, 2^{13311212343440} is an apocalyptic number.

13311212343440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13311212343440 is an abundant number, since it is smaller than the sum of its proper divisors (20760606652720).

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

13311212343440 is a wasteful number, since it uses less digits than its factorization.

13311212343440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138774240 (or 138774234 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 13311212343440 its reverse (4434321211331), we get a palindrome (17745533554771).

The spelling of 13311212343440 in words is "thirteen trillion, three hundred eleven billion, two hundred twelve million, three hundred forty-three thousand, four hundred forty".