1280540677804 has 6 divisors (see below), whose sum is σ = 2240946186164. Its totient is φ = 640270338900.

The previous prime is 1280540677777. The next prime is 1280540677879. The reversal of 1280540677804 is 4087760450821.

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 as a sum of consecutive naturals, namely, 160067584722 + ... + 160067584729.

Almost surely, 2^{1280540677804} is an apocalyptic number.

It is an amenable number.

1280540677804 is a deficient number, since it is larger than the sum of its proper divisors (960405508360).

1280540677804 is a wasteful number, since it uses less digits than its factorization.

1280540677804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320135169455 (or 320135169453 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 1280540677804 in words is "one trillion, two hundred eighty billion, five hundred forty million, six hundred seventy-seven thousand, eight hundred four".