139312526985 has 24 divisors (see below), whose sum is σ = 246031183944. Its totient is φ = 72898126080.

The previous prime is 139312526971. The next prime is 139312527001. The reversal of 139312526985 is 589625213931.

139312526985 is a `hidden beast` number, since 1 + 3 + 9 + 31 + 2 + 526 + 9 + 85 = 666.

139312526985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5733972729 + 133578554256 = 75723^2 + 365484^2 .

It is not a de Polignac number, because 139312526985 - 2¹⁸ = 139312264841 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29203596 + ... + 29208365.

It is an arithmetic number, because the mean of its divisors is an integer number (10251299331).

Almost surely, 2^139312526985 is an apocalyptic number.

139312526985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139312526985 is a deficient number, since it is larger than the sum of its proper divisors (106718656959).

139312526985 is a wasteful number, since it uses less digits than its factorization.

139312526985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58412025 (or 58412022 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 139312526985 in words is "one hundred thirty-nine billion, three hundred twelve million, five hundred twenty-six thousand, nine hundred eighty-five".