1309489864320 has 512 divisors, whose sum is σ = 4614382080000. Its totient is φ = 313229721600.

The previous prime is 1309489864313. The next prime is 1309489864369. The reversal of 1309489864320 is 234689849031.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 623862631 + ... + 623864729.

It is an arithmetic number, because the mean of its divisors is an integer number (9012465000).

Almost surely, 2^{1309489864320} is an apocalyptic number.

1309489864320 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 1309489864320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2307191040000).

1309489864320 is an abundant number, since it is smaller than the sum of its proper divisors (3304892215680).

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

1309489864320 is a wasteful number, since it uses less digits than its factorization.

1309489864320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512 (or 2500 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 57.

The spelling of 1309489864320 in words is "one trillion, three hundred nine billion, four hundred eighty-nine million, eight hundred sixty-four thousand, three hundred twenty".