138887853253 has 16 divisors (see below), whose sum is σ = 141362256240. Its totient is φ = 136434935296.

The previous prime is 138887853227. The next prime is 138887853281. The reversal of 138887853253 is 352358788831.

It can be written as a sum of positive squares in 8 ways, for example, as 44342672929 + 94545180324 = 210577^2 + 307482^2 .

It is a cyclic number.

It is not a de Polignac number, because 138887853253 - 2²¹ = 138885756101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138887853191 and 138887853200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138887853653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30745551 + ... + 30750067.

It is an arithmetic number, because the mean of its divisors is an integer number (8835141015).

Almost surely, 2^138887853253 is an apocalyptic number.

It is an amenable number.

138887853253 is a deficient number, since it is larger than the sum of its proper divisors (2474402987).

138887853253 is a wasteful number, since it uses less digits than its factorization.

138887853253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6776.

The product of its digits is 38707200, while the sum is 61.

The spelling of 138887853253 in words is "one hundred thirty-eight billion, eight hundred eighty-seven million, eight hundred fifty-three thousand, two hundred fifty-three".