258138667537 has 2 divisors, whose sum is σ = 258138667538. Its totient is φ = 258138667536.

The previous prime is 258138667489. The next prime is 258138667621. The reversal of 258138667537 is 735766831852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254339671041 + 3798996496 = 504321^2 + 61636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258138667537 is a prime.

It is not a weakly prime, because it can be changed into another prime (258138667637) 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, 129069333768 + 129069333769.

It is an arithmetic number, because the mean of its divisors is an integer number (129069333769).

Almost surely, 2^258138667537 is an apocalyptic number.

It is an amenable number.

258138667537 is a deficient number, since it is larger than the sum of its proper divisors (1).

258138667537 is an equidigital number, since it uses as much as digits as its factorization.

258138667537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50803200, while the sum is 61.

The spelling of 258138667537 in words is "two hundred fifty-eight billion, one hundred thirty-eight million, six hundred sixty-seven thousand, five hundred thirty-seven".