10520245129 has 2 divisors, whose sum is σ = 10520245130. Its totient is φ = 10520245128.

The previous prime is 10520245121. The next prime is 10520245189. The reversal of 10520245129 is 92154202501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7367647225 + 3152597904 = 85835^2 + 56148^2 .

It is a cyclic number.

It is not a de Polignac number, because 10520245129 - 2³ = 10520245121 is a prime.

It is a super-2 number, since 2×10520245129² (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 10520245129.

It is not a weakly prime, because it can be changed into another prime (10520245121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260122564 + 5260122565.

It is an arithmetic number, because the mean of its divisors is an integer number (5260122565).

Almost surely, 2^10520245129 is an apocalyptic number.

It is an amenable number.

10520245129 is a deficient number, since it is larger than the sum of its proper divisors (1).

10520245129 is an equidigital number, since it uses as much as digits as its factorization.

10520245129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 10520245129 in words is "ten billion, five hundred twenty million, two hundred forty-five thousand, one hundred twenty-nine".