1280161667344 has 40 divisors (see below), whose sum is σ = 2957889075840. Its totient is φ = 524786769408.

The previous prime is 1280161667333. The next prime is 1280161667353. The reversal of 1280161667344 is 4437661610821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248476009 + ... + 248481160.

It is an arithmetic number, because the mean of its divisors is an integer number (73947226896).

Almost surely, 2^{1280161667344} is an apocalyptic number.

1280161667344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1280161667344 is an abundant number, since it is smaller than the sum of its proper divisors (1677727408496).

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

1280161667344 is a wasteful number, since it uses less digits than its factorization.

1280161667344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496957207 (or 496957201 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 1280161667344 in words is "one trillion, two hundred eighty billion, one hundred sixty-one million, six hundred sixty-seven thousand, three hundred forty-four".