123368138015 has 16 divisors (see below), whose sum is σ = 156807340128. Its totient is φ = 92855033856.

The previous prime is 123368138011. The next prime is 123368138041. The reversal of 123368138015 is 510831863321.

It is a cyclic number.

It is not a de Polignac number, because 123368138015 - 2² = 123368138011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123368138011) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 29597 + ... + 497606.

It is an arithmetic number, because the mean of its divisors is an integer number (9800458758).

Almost surely, 2^123368138015 is an apocalyptic number.

123368138015 is a deficient number, since it is larger than the sum of its proper divisors (33439202113).

123368138015 is a wasteful number, since it uses less digits than its factorization.

123368138015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529978.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 123368138015 in words is "one hundred twenty-three billion, three hundred sixty-eight million, one hundred thirty-eight thousand, fifteen".