16523013257 has 2 divisors, whose sum is σ = 16523013258. Its totient is φ = 16523013256.

The previous prime is 16523013197. The next prime is 16523013317. The reversal of 16523013257 is 75231032561.

16523013257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (16523013197) and next prime (16523013317).

It can be written as a sum of positive squares in only one way, i.e., 9444146761 + 7078866496 = 97181^2 + 84136^2 .

It is a cyclic number.

It is not a de Polignac number, because 16523013257 - 2²⁴ = 16506236041 is a prime.

It is not a weakly prime, because it can be changed into another prime (16523073257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8261506628 + 8261506629.

It is an arithmetic number, because the mean of its divisors is an integer number (8261506629).

Almost surely, 2^16523013257 is an apocalyptic number.

It is an amenable number.

16523013257 is a deficient number, since it is larger than the sum of its proper divisors (1).

16523013257 is an equidigital number, since it uses as much as digits as its factorization.

16523013257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 16523013257 in words is "sixteen billion, five hundred twenty-three million, thirteen thousand, two hundred fifty-seven".