1280747881152 has 168 divisors, whose sum is σ = 3900434007600. Its totient is φ = 401802369024.

The previous prime is 1280747881117. The next prime is 1280747881177. The reversal of 1280747881152 is 2511887470821.

1280747881152 is a `hidden beast` number, since 1 + 2 + 80 + 7 + 478 + 81 + 15 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2603599 + ... + 3056177.

Almost surely, 2^{1280747881152} is an apocalyptic number.

1280747881152 is a gapful number since it is divisible by the number (12) 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 1280747881152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1950217003800).

1280747881152 is an abundant number, since it is smaller than the sum of its proper divisors (2619686126448).

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

1280747881152 is an equidigital number, since it uses as much as digits as its factorization.

1280747881152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452648 (or 452601 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 54.

The spelling of 1280747881152 in words is "one trillion, two hundred eighty billion, seven hundred forty-seven million, eight hundred eighty-one thousand, one hundred fifty-two".