168673742555 has 16 divisors (see below), whose sum is σ = 204553533600. Its totient is φ = 133510809600.

The previous prime is 168673742513. The next prime is 168673742591. The reversal of 168673742555 is 555247376861.

It is not a de Polignac number, because 168673742555 - 2³⁰ = 167600000731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168673742494 and 168673742503.

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, 622331 + ... + 851259.

It is an arithmetic number, because the mean of its divisors is an integer number (12784595850).

Almost surely, 2^168673742555 is an apocalyptic number.

168673742555 is a deficient number, since it is larger than the sum of its proper divisors (35879791045).

168673742555 is a wasteful number, since it uses less digits than its factorization.

168673742555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230494.

The product of its digits is 42336000, while the sum is 59.

The spelling of 168673742555 in words is "one hundred sixty-eight billion, six hundred seventy-three million, seven hundred forty-two thousand, five hundred fifty-five".