1266878000280 has 32 divisors (see below), whose sum is σ = 3800634001200. Its totient is φ = 337834133376.

The previous prime is 1266878000279. The next prime is 1266878000327. The reversal of 1266878000280 is 820008786621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5278658215 + ... + 5278658454.

Almost surely, 2^{1266878000280} is an apocalyptic number.

1266878000280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266878000280 is an abundant number, since it is smaller than the sum of its proper divisors (2533756000920).

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

1266878000280 is a wasteful number, since it uses less digits than its factorization.

1266878000280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557316683 (or 10557316679 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 1266878000280 in words is "one trillion, two hundred sixty-six billion, eight hundred seventy-eight million, two hundred eighty", and thus it is an aban number.