13423540440000 has 280 divisors, whose sum is σ = 45108944679568. Its totient is φ = 3520926720000.

The previous prime is 13423540439987. The next prime is 13423540440073. The reversal of 13423540440000 is 4404532431.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 13423540440000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6403092 + ... + 8236908.

Almost surely, 2^{13423540440000} is an apocalyptic number.

13423540440000 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 13423540440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22554472339784).

13423540440000 is an abundant number, since it is smaller than the sum of its proper divisors (31685404239568).

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

13423540440000 is an equidigital number, since it uses as much as digits as its factorization.

13423540440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833913 (or 1833888 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 13423540440000 its reverse (4404532431), we get a palindrome (13427944972431).

The spelling of 13423540440000 in words is "thirteen trillion, four hundred twenty-three billion, five hundred forty million, four hundred forty thousand".