1339996857885 has 80 divisors (see below), whose sum is σ = 2889706512000. Its totient is φ = 580329442944.

The previous prime is 1339996857869. The next prime is 1339996857889. The reversal of 1339996857885 is 5887586999331.

1339996857885 is a `hidden beast` number, since 1 + 3 + 39 + 9 + 9 + 6 + 8 + 578 + 8 + 5 = 666.

It is not a de Polignac number, because 1339996857885 - 2⁴ = 1339996857869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339996857889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12384610 + ... + 12492339.

It is an arithmetic number, because the mean of its divisors is an integer number (36121331400).

Almost surely, 2^{1339996857885} is an apocalyptic number.

1339996857885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1339996857885 is an abundant number, since it is smaller than the sum of its proper divisors (1549709654115).

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

1339996857885 is a wasteful number, since it uses less digits than its factorization.

1339996857885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24876992 (or 24876983 counting only the distinct ones).

The product of its digits is 3527193600, while the sum is 81.

The spelling of 1339996857885 in words is "one trillion, three hundred thirty-nine billion, nine hundred ninety-six million, eight hundred fifty-seven thousand, eight hundred eighty-five".