123838281487 has 2 divisors, whose sum is σ = 123838281488. Its totient is φ = 123838281486.

The previous prime is 123838281451. The next prime is 123838281521. The reversal of 123838281487 is 784182838321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123838281487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123838284487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61919140743 + 61919140744.

It is an arithmetic number, because the mean of its divisors is an integer number (61919140744).

Almost surely, 2^123838281487 is an apocalyptic number.

123838281487 is a deficient number, since it is larger than the sum of its proper divisors (1).

123838281487 is an equidigital number, since it uses as much as digits as its factorization.

123838281487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4128768, while the sum is 55.

The spelling of 123838281487 in words is "one hundred twenty-three billion, eight hundred thirty-eight million, two hundred eighty-one thousand, four hundred eighty-seven".