13423400214440 has 128 divisors (see below), whose sum is σ = 33372266976000. Its totient is φ = 4833422635008.

The previous prime is 13423400214409. The next prime is 13423400214493. The reversal of 13423400214440 is 4441200432431.

It is a junction number, because it is equal to n+sod(n) for n = 13423400214397 and 13423400214406.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273816251 + ... + 273865269.

It is an arithmetic number, because the mean of its divisors is an integer number (260720835750).

Almost surely, 2^{13423400214440} is an apocalyptic number.

13423400214440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13423400214440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16686133488000).

13423400214440 is an abundant number, since it is smaller than the sum of its proper divisors (19948866761560).

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

13423400214440 is a wasteful number, since it uses less digits than its factorization.

13423400214440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66579 (or 66575 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 13423400214440 its reverse (4441200432431), we get a palindrome (17864600646871).

The spelling of 13423400214440 in words is "thirteen trillion, four hundred twenty-three billion, four hundred million, two hundred fourteen thousand, four hundred forty".