10138471685 has 4 divisors (see below), whose sum is σ = 12166166028. Its totient is φ = 8110777344.

The previous prime is 10138471669. The next prime is 10138471703. The reversal of 10138471685 is 58617483101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6988792801 + 3149678884 = 83599^2 + 56122^2 .

It is a cyclic number.

It is not a de Polignac number, because 10138471685 - 2⁴ = 10138471669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013847164 + ... + 1013847173.

It is an arithmetic number, because the mean of its divisors is an integer number (3041541507).

Almost surely, 2^10138471685 is an apocalyptic number.

It is an amenable number.

10138471685 is a deficient number, since it is larger than the sum of its proper divisors (2027694343).

10138471685 is an equidigital number, since it uses as much as digits as its factorization.

10138471685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027694342.

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 10138471685 in words is "ten billion, one hundred thirty-eight million, four hundred seventy-one thousand, six hundred eighty-five".