1297539324660 has 96 divisors (see below), whose sum is σ = 3658741696512. Its totient is φ = 343571356800.

The previous prime is 1297539324649. The next prime is 1297539324677. The reversal of 1297539324660 is 664239357921.

It is a self number, because there is not a number n which added to its sum of digits gives 1297539324660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21922827 + ... + 21981933.

It is an arithmetic number, because the mean of its divisors is an integer number (38111892672).

Almost surely, 2^{1297539324660} is an apocalyptic number.

1297539324660 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 1297539324660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1829370848256).

1297539324660 is an abundant number, since it is smaller than the sum of its proper divisors (2361202371852).

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

1297539324660 is a wasteful number, since it uses less digits than its factorization.

1297539324660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61693 (or 61691 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 57.

The spelling of 1297539324660 in words is "one trillion, two hundred ninety-seven billion, five hundred thirty-nine million, three hundred twenty-four thousand, six hundred sixty".