173664476138 has 32 divisors (see below), whose sum is σ = 269941351680. Its totient is φ = 83743529920.

The previous prime is 173664476107. The next prime is 173664476149. The reversal of 173664476138 is 831674466371.

173664476138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3006368 + ... + 3063588.

It is an arithmetic number, because the mean of its divisors is an integer number (8435667240).

Almost surely, 2^173664476138 is an apocalyptic number.

173664476138 is a deficient number, since it is larger than the sum of its proper divisors (96276875542).

173664476138 is a wasteful number, since it uses less digits than its factorization.

173664476138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57742.

The product of its digits is 12192768, while the sum is 56.

The spelling of 173664476138 in words is "one hundred seventy-three billion, six hundred sixty-four million, four hundred seventy-six thousand, one hundred thirty-eight".