12705408475238 has 32 divisors (see below), whose sum is σ = 19701426216960. Its totient is φ = 6138863434080.

The previous prime is 12705408475223. The next prime is 12705408475307. The reversal of 12705408475238 is 83257480450721.

It is a happy number.

It is a super-2 number, since 2×12705408475238² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377592131 + ... + 377625777.

It is an arithmetic number, because the mean of its divisors is an integer number (615669569280).

Almost surely, 2^{12705408475238} is an apocalyptic number.

12705408475238 is a deficient number, since it is larger than the sum of its proper divisors (6996017741722).

12705408475238 is a wasteful number, since it uses less digits than its factorization.

12705408475238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42332.

The product of its (nonzero) digits is 15052800, while the sum is 56.

The spelling of 12705408475238 in words is "twelve trillion, seven hundred five billion, four hundred eight million, four hundred seventy-five thousand, two hundred thirty-eight".