10208135869 has 2 divisors, whose sum is σ = 10208135870. Its totient is φ = 10208135868.

The previous prime is 10208135867. The next prime is 10208135881. The reversal of 10208135869 is 96853180201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5766579844 + 4441556025 = 75938^2 + 66645^2 .

It is a cyclic number.

It is not a de Polignac number, because 10208135869 - 2¹ = 10208135867 is a prime.

It is a super-2 number, since 2×10208135869² (a number of 21 digits) contains 22 as substring.

Together with 10208135867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10208135863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5104067934 + 5104067935.

It is an arithmetic number, because the mean of its divisors is an integer number (5104067935).

Almost surely, 2^10208135869 is an apocalyptic number.

It is an amenable number.

10208135869 is a deficient number, since it is larger than the sum of its proper divisors (1).

10208135869 is an equidigital number, since it uses as much as digits as its factorization.

10208135869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 10208135869 in words is "ten billion, two hundred eight million, one hundred thirty-five thousand, eight hundred sixty-nine".