1298890080000 has 1800 divisors, whose sum is σ = 5173598618496. Its totient is φ = 323481600000.

The previous prime is 1298890079983. The next prime is 1298890080001. The reversal of 1298890080000 is 800988921.

It is a tau number, because it is divible by the number of its divisors (1800).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298890080001) by changing a digit.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 21293279970 + ... + 21293280030.

Almost surely, 2^{1298890080000} is an apocalyptic number.

1298890080000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298890080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2586799309248).

1298890080000 is an abundant number, since it is smaller than the sum of its proper divisors (3874708538496).

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

1298890080000 is an frugal number, since it uses more digits than its factorization.

1298890080000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 1298890080000 in words is "one trillion, two hundred ninety-eight billion, eight hundred ninety million, eighty thousand".