1381308306585 has 32 divisors (see below), whose sum is σ = 2313027774720. Its totient is φ = 702576365568.

The previous prime is 1381308306577. The next prime is 1381308306649. The reversal of 1381308306585 is 5856038031831.

It is not a de Polignac number, because 1381308306585 - 2³ = 1381308306577 is a prime.

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, 5824080 + ... + 6056609.

It is an arithmetic number, because the mean of its divisors is an integer number (72282117960).

Almost surely, 2^{1381308306585} is an apocalyptic number.

1381308306585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1381308306585 is a deficient number, since it is larger than the sum of its proper divisors (931719468135).

1381308306585 is a wasteful number, since it uses less digits than its factorization.

1381308306585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11881057.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 1381308306585 in words is "one trillion, three hundred eighty-one billion, three hundred eight million, three hundred six thousand, five hundred eighty-five".