1280846840364 has 288 divisors, whose sum is σ = 4176096579200. Its totient is φ = 328674350592.

The previous prime is 1280846840347. The next prime is 1280846840411. The reversal of 1280846840364 is 4630486480821.

It is a happy number.

1280846840364 is a `hidden beast` number, since 1 + 2 + 80 + 8 + 468 + 40 + 3 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1280846840364.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5831562 + ... + 6047214.

Almost surely, 2^{1280846840364} is an apocalyptic number.

1280846840364 is a gapful number since it is divisible by the number (14) 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 1280846840364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2088048289600).

1280846840364 is an abundant number, since it is smaller than the sum of its proper divisors (2895249738836).

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

1280846840364 is a wasteful number, since it uses less digits than its factorization.

1280846840364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215734 (or 215715 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 54.

The spelling of 1280846840364 in words is "one trillion, two hundred eighty billion, eight hundred forty-six million, eight hundred forty thousand, three hundred sixty-four".