10204123481 has 2 divisors, whose sum is σ = 10204123482. Its totient is φ = 10204123480.

The previous prime is 10204123459. The next prime is 10204123487. The reversal of 10204123481 is 18432140201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9502350400 + 701773081 = 97480^2 + 26491^2 .

It is a cyclic number.

It is not a de Polignac number, because 10204123481 - 2²² = 10199929177 is a prime.

It is a super-2 number, since 2×10204123481² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10204123481.

It is not a weakly prime, because it can be changed into another prime (10204123487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5102061740 + 5102061741.

It is an arithmetic number, because the mean of its divisors is an integer number (5102061741).

Almost surely, 2^10204123481 is an apocalyptic number.

It is an amenable number.

10204123481 is a deficient number, since it is larger than the sum of its proper divisors (1).

10204123481 is an equidigital number, since it uses as much as digits as its factorization.

10204123481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 10204123481 its reverse (18432140201), we get a palindrome (28636263682).

The spelling of 10204123481 in words is "ten billion, two hundred four million, one hundred twenty-three thousand, four hundred eighty-one".