1344611521000 has 256 divisors, whose sum is σ = 3506890982400. Its totient is φ = 478453248000.

The previous prime is 1344611520977. The next prime is 1344611521007. The reversal of 1344611521000 is 1251164431.

It is a self number, because there is not a number n which added to its sum of digits gives 1344611521000.

It is not an unprimeable number, because it can be changed into a prime (1344611521007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98190154 + ... + 98203846.

It is an arithmetic number, because the mean of its divisors is an integer number (13698792900).

Almost surely, 2^{1344611521000} is an apocalyptic number.

1344611521000 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 1344611521000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1753445491200).

1344611521000 is an abundant number, since it is smaller than the sum of its proper divisors (2162279461400).

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

1344611521000 is a wasteful number, since it uses less digits than its factorization.

1344611521000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13917 (or 13903 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 1344611521000 its reverse (1251164431), we get a palindrome (1345862685431).

The spelling of 1344611521000 in words is "one trillion, three hundred forty-four billion, six hundred eleven million, five hundred twenty-one thousand".