1280501280550 has 48 divisors (see below), whose sum is σ = 2443940109072. Its totient is φ = 498864665600.

The previous prime is 1280501280547. The next prime is 1280501280557. The reversal of 1280501280550 is 550821050821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280501280557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 688977 + ... + 1742323.

It is an arithmetic number, because the mean of its divisors is an integer number (50915418939).

Almost surely, 2^{1280501280550} is an apocalyptic number.

1280501280550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1280501280550 is a deficient number, since it is larger than the sum of its proper divisors (1163438828522).

1280501280550 is a wasteful number, since it uses less digits than its factorization.

1280501280550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053993 (or 1053988 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 37.

The spelling of 1280501280550 in words is "one trillion, two hundred eighty billion, five hundred one million, two hundred eighty thousand, five hundred fifty".