12538646470123 has 16 divisors (see below), whose sum is σ = 13506571566720. Its totient is φ = 11596474806400.

The previous prime is 12538646470093. The next prime is 12538646470159. The reversal of 12538646470123 is 32107464683521.

It is a cyclic number.

It is not a de Polignac number, because 12538646470123 - 2¹³ = 12538646461931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12538646470183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68988 + ... + 5008198.

It is an arithmetic number, because the mean of its divisors is an integer number (844160722920).

Almost surely, 2^{12538646470123} is an apocalyptic number.

12538646470123 is a deficient number, since it is larger than the sum of its proper divisors (967925096597).

12538646470123 is a wasteful number, since it uses less digits than its factorization.

12538646470123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4941818.

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 12538646470123 in words is "twelve trillion, five hundred thirty-eight billion, six hundred forty-six million, four hundred seventy thousand, one hundred twenty-three".