1280388332676 has 48 divisors (see below), whose sum is σ = 3054116782080. Its totient is φ = 417365573280.

The previous prime is 1280388332653. The next prime is 1280388332747. The reversal of 1280388332676 is 6762338830821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4598956 + ... + 4869411.

It is an arithmetic number, because the mean of its divisors is an integer number (63627432960).

Almost surely, 2^{1280388332676} is an apocalyptic number.

It is an amenable number.

1280388332676 is an abundant number, since it is smaller than the sum of its proper divisors (1773728449404).

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

1280388332676 is a wasteful number, since it uses less digits than its factorization.

1280388332676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468624 (or 9468622 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 57.

The spelling of 1280388332676 in words is "one trillion, two hundred eighty billion, three hundred eighty-eight million, three hundred thirty-two thousand, six hundred seventy-six".