838581571123 has 2 divisors, whose sum is σ = 838581571124. Its totient is φ = 838581571122.

The previous prime is 838581571117. The next prime is 838581571127. The reversal of 838581571123 is 321175185838.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838581571123 is a prime.

It is a super-2 number, since 2×838581571123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (838581571127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419290785561 + 419290785562.

It is an arithmetic number, because the mean of its divisors is an integer number (419290785562).

Almost surely, 2^838581571123 is an apocalyptic number.

838581571123 is a deficient number, since it is larger than the sum of its proper divisors (1).

838581571123 is an equidigital number, since it uses as much as digits as its factorization.

838581571123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1612800, while the sum is 52.

The spelling of 838581571123 in words is "eight hundred thirty-eight billion, five hundred eighty-one million, five hundred seventy-one thousand, one hundred twenty-three".