1249288445280 has 48 divisors (see below), whose sum is σ = 3935258604144. Its totient is φ = 333143585280.

The previous prime is 1249288445243. The next prime is 1249288445281. The reversal of 1249288445280 is 825448829421.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1249288445280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249288445281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1301341651 + ... + 1301342610.

It is an arithmetic number, because the mean of its divisors is an integer number (81984554253).

Almost surely, 2^{1249288445280} is an apocalyptic number.

1249288445280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249288445280 is an abundant number, since it is smaller than the sum of its proper divisors (2685970158864).

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

1249288445280 is a wasteful number, since it uses less digits than its factorization.

1249288445280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602684279 (or 2602684271 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 57.

The spelling of 1249288445280 in words is "one trillion, two hundred forty-nine billion, two hundred eighty-eight million, four hundred forty-five thousand, two hundred eighty".