1308728345399 has 8 divisors (see below), whose sum is σ = 1313649141840. Its totient is φ = 1303810638976.

The previous prime is 1308728345371. The next prime is 1308728345401. The reversal of 1308728345399 is 9935438278031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1308728345399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308728345359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77912 + ... + 1619730.

It is an arithmetic number, because the mean of its divisors is an integer number (164206142730).

Almost surely, 2^{1308728345399} is an apocalyptic number.

1308728345399 is a deficient number, since it is larger than the sum of its proper divisors (4920796441).

1308728345399 is a wasteful number, since it uses less digits than its factorization.

1308728345399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545009.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 1308728345399 in words is "one trillion, three hundred eight billion, seven hundred twenty-eight million, three hundred forty-five thousand, three hundred ninety-nine".