1296505503104 has 128 divisors (see below), whose sum is σ = 2962477800000. Its totient is φ = 553651273728.

The previous prime is 1296505503103. The next prime is 1296505503113. The reversal of 1296505503104 is 4013055056921.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296505503103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373738682 + ... + 373742150.

Almost surely, 2^{1296505503104} is an apocalyptic number.

1296505503104 is a gapful number since it is divisible by the number (14) 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 1296505503104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481238900000).

1296505503104 is an abundant number, since it is smaller than the sum of its proper divisors (1665972296896).

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

1296505503104 is an equidigital number, since it uses as much as digits as its factorization.

1296505503104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4868 (or 4856 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 1296505503104 in words is "one trillion, two hundred ninety-six billion, five hundred five million, five hundred three thousand, one hundred four".