123838632784 has 10 divisors (see below), whose sum is σ = 239937351050. Its totient is φ = 61919316384.

The previous prime is 123838632779. The next prime is 123838632811. The reversal of 123838632784 is 487236838321.

It is a happy number.

123838632784 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 123158883600 + 679749184 = 350940^2 + 26072^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3869957259 + ... + 3869957290.

It is an arithmetic number, because the mean of its divisors is an integer number (23993735105).

Almost surely, 2^123838632784 is an apocalyptic number.

It is an amenable number.

123838632784 is a deficient number, since it is larger than the sum of its proper divisors (116098718266).

123838632784 is an equidigital number, since it uses as much as digits as its factorization.

123838632784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7739914557 (or 7739914551 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 55.

The spelling of 123838632784 in words is "one hundred twenty-three billion, eight hundred thirty-eight million, six hundred thirty-two thousand, seven hundred eighty-four".