1298957171568 has 120 divisors (see below), whose sum is σ = 3905362897920. Its totient is φ = 370953394560.

The previous prime is 1298957171513. The next prime is 1298957171591. The reversal of 1298957171568 is 8651717598921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4834263 + ... + 5095881.

It is an arithmetic number, because the mean of its divisors is an integer number (32544690816).

Almost surely, 2^{1298957171568} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298957171568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1952681448960).

1298957171568 is an abundant number, since it is smaller than the sum of its proper divisors (2606405726352).

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

1298957171568 is a wasteful number, since it uses less digits than its factorization.

1298957171568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263755 (or 263742 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 69.

The spelling of 1298957171568 in words is "one trillion, two hundred ninety-eight billion, nine hundred fifty-seven million, one hundred seventy-one thousand, five hundred sixty-eight".