1275421315168 has 288 divisors, whose sum is σ = 3434841946368. Its totient is φ = 458259379200.

The previous prime is 1275421315163. The next prime is 1275421315187. The reversal of 1275421315168 is 8615131245721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275421315163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 324450163 + ... + 324454093.

It is an arithmetic number, because the mean of its divisors is an integer number (11926534536).

Almost surely, 2^{1275421315168} 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 1275421315168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717420973184).

1275421315168 is an abundant number, since it is smaller than the sum of its proper divisors (2159420631200).

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

1275421315168 is a wasteful number, since it uses less digits than its factorization.

1275421315168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5426 (or 5411 counting only the distinct ones).

The product of its digits is 403200, while the sum is 46.

The spelling of 1275421315168 in words is "one trillion, two hundred seventy-five billion, four hundred twenty-one million, three hundred fifteen thousand, one hundred sixty-eight".