1272901300900 has 18 divisors (see below), whose sum is σ = 2762195823170. Its totient is φ = 509160520320.

The previous prime is 1272901300873. The next prime is 1272901301011. The reversal of 1272901300900 is 90031092721.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 86313739264 + 1186587561636 = 293792^2 + 1089306^2 .

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 5 ways as a sum of consecutive naturals, for example, 6364506405 + ... + 6364506604.

Almost surely, 2^{1272901300900} is an apocalyptic number.

1272901300900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272901300900 is an abundant number, since it is smaller than the sum of its proper divisors (1489294522270).

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

1272901300900 is a wasteful number, since it uses less digits than its factorization.

1272901300900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12729013023 (or 12729013016 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The spelling of 1272901300900 in words is "one trillion, two hundred seventy-two billion, nine hundred one million, three hundred thousand, nine hundred".