1275442800000 has 192 divisors, whose sum is σ = 4234601624400. Its totient is φ = 340117760000.

The previous prime is 1275442799993. The next prime is 1275442800001. The reversal of 1275442800000 is 82445721.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275442800001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 668566 + ... + 1731434.

Almost surely, 2^{1275442800000} is an apocalyptic number.

1275442800000 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 1275442800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2117300812200).

1275442800000 is an abundant number, since it is smaller than the sum of its proper divisors (2959158824400).

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

1275442800000 is an frugal number, since it uses more digits than its factorization.

1275442800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062911 (or 1062879 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The spelling of 1275442800000 in words is "one trillion, two hundred seventy-five billion, four hundred forty-two million, eight hundred thousand".