14139985257 has 12 divisors (see below), whose sum is σ = 20759250564. Its totient is φ = 9272121120.

The previous prime is 14139985207. The next prime is 14139985261. The reversal of 14139985257 is 75258993141.

It is a happy number.

14139985257 is a `hidden beast` number, since 14 + 13 + 9 + 98 + 525 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3104272656 + 11035712601 = 55716^2 + 105051^2 .

It is not a de Polignac number, because 14139985257 - 2⁷ = 14139985129 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (14139985207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12877398 + ... + 12878495.

It is an arithmetic number, because the mean of its divisors is an integer number (1729937547).

Almost surely, 2^14139985257 is an apocalyptic number.

It is an amenable number.

14139985257 is a deficient number, since it is larger than the sum of its proper divisors (6619265307).

14139985257 is a wasteful number, since it uses less digits than its factorization.

14139985257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25755960 (or 25755957 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The spelling of 14139985257 in words is "fourteen billion, one hundred thirty-nine million, nine hundred eighty-five thousand, two hundred fifty-seven".