1345081553508 has 384 divisors, whose sum is σ = 4231378206720. Its totient is φ = 321847418880.

The previous prime is 1345081553507. The next prime is 1345081553513. The reversal of 1345081553508 is 8053551805431.

It is not an unprimeable number, because it can be changed into a prime (1345081553507) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 398777310 + ... + 398780682.

It is an arithmetic number, because the mean of its divisors is an integer number (11019214080).

Almost surely, 2^{1345081553508} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1345081553508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2115689103360).

1345081553508 is an abundant number, since it is smaller than the sum of its proper divisors (2886296653212).

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

1345081553508 is a wasteful number, since it uses less digits than its factorization.

1345081553508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947 (or 3945 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 48.

The spelling of 1345081553508 in words is "one trillion, three hundred forty-five billion, eighty-one million, five hundred fifty-three thousand, five hundred eight".