1339306721280 has 1200 divisors, whose sum is σ = 5343925466880. Its totient is φ = 318151065600.

The previous prime is 1339306721257. The next prime is 1339306721297. The reversal of 1339306721280 is 821276039331.

1339306721280 is a `hidden beast` number, since 1 + 339 + 30 + 6 + 7 + 2 + 1 + 280 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4306452325 + ... + 4306452635.

Almost surely, 2^{1339306721280} is an apocalyptic number.

1339306721280 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 1339306721280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2671962733440).

1339306721280 is an abundant number, since it is smaller than the sum of its proper divisors (4004618745600).

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

1339306721280 is an equidigital number, since it uses as much as digits as its factorization.

1339306721280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 1339306721280 in words is "one trillion, three hundred thirty-nine billion, three hundred six million, seven hundred twenty-one thousand, two hundred eighty".