1308728750385 has 16 divisors (see below), whose sum is σ = 2393104000896. Its totient is φ = 598276000128.

The previous prime is 1308728750383. The next prime is 1308728750401. The reversal of 1308728750385 is 5830578278031.

It is not a de Polignac number, because 1308728750385 - 2¹ = 1308728750383 is a prime.

It is a super-3 number, since 3×1308728750385³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1308728750383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6232041564 + ... + 6232041773.

It is an arithmetic number, because the mean of its divisors is an integer number (149569000056).

Almost surely, 2^{1308728750385} is an apocalyptic number.

1308728750385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1308728750385 is a deficient number, since it is larger than the sum of its proper divisors (1084375250511).

1308728750385 is a wasteful number, since it uses less digits than its factorization.

1308728750385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12464083352.

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 1308728750385 in words is "one trillion, three hundred eight billion, seven hundred twenty-eight million, seven hundred fifty thousand, three hundred eighty-five".