1298017457880 has 256 divisors, whose sum is σ = 4576855449600. Its totient is φ = 290336901120.

The previous prime is 1298017457873. The next prime is 1298017457959. The reversal of 1298017457880 is 887547108921.

It is a super-2 number, since 2×1298017457880² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41803401 + ... + 41834439.

It is an arithmetic number, because the mean of its divisors is an integer number (17878341600).

Almost surely, 2^{1298017457880} is an apocalyptic number.

1298017457880 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 1298017457880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2288427724800).

1298017457880 is an abundant number, since it is smaller than the sum of its proper divisors (3278837991720).

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

1298017457880 is a wasteful number, since it uses less digits than its factorization.

1298017457880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33514 (or 33510 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 60.

The spelling of 1298017457880 in words is "one trillion, two hundred ninety-eight billion, seventeen million, four hundred fifty-seven thousand, eight hundred eighty".