387138126113 has 2 divisors, whose sum is σ = 387138126114. Its totient is φ = 387138126112.

The previous prime is 387138126103. The next prime is 387138126121. The reversal of 387138126113 is 311621831783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387004677409 + 133448704 = 622097^2 + 11552^2 .

It is a cyclic number.

It is not a de Polignac number, because 387138126113 - 2¹² = 387138122017 is a prime.

It is not a weakly prime, because it can be changed into another prime (387138126103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193569063056 + 193569063057.

It is an arithmetic number, because the mean of its divisors is an integer number (193569063057).

Almost surely, 2^387138126113 is an apocalyptic number.

It is an amenable number.

387138126113 is a deficient number, since it is larger than the sum of its proper divisors (1).

387138126113 is an equidigital number, since it uses as much as digits as its factorization.

387138126113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

Adding to 387138126113 its reverse (311621831783), we get a palindrome (698759957896).

The spelling of 387138126113 in words is "three hundred eighty-seven billion, one hundred thirty-eight million, one hundred twenty-six thousand, one hundred thirteen".