1280344376960 has 256 divisors, whose sum is σ = 3434075844480. Its totient is φ = 452369203200.

The previous prime is 1280344376933. The next prime is 1280344376963. The reversal of 1280344376960 is 696734430821.

It is a super-2 number, since 2×1280344376960² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1280344376963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213851087 + ... + 213857073.

Almost surely, 2^{1280344376960} is an apocalyptic number.

1280344376960 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 1280344376960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717037922240).

1280344376960 is an abundant number, since it is smaller than the sum of its proper divisors (2153731467520).

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

1280344376960 is a wasteful number, since it uses less digits than its factorization.

1280344376960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6875 (or 6863 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 1280344376960 in words is "one trillion, two hundred eighty billion, three hundred forty-four million, three hundred seventy-six thousand, nine hundred sixty".