68557144430173 has 16 divisors (see below), whose sum is σ = 79525392718464. Its totient is φ = 57889037306880.

The previous prime is 68557144430153. The next prime is 68557144430233. The reversal of 68557144430173 is 37103444175586.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68557144430173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68557144430113) 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, 272729940 + ... + 272981197.

It is an arithmetic number, because the mean of its divisors is an integer number (4970337044904).

Almost surely, 2^{68557144430173} is an apocalyptic number.

It is an amenable number.

68557144430173 is a deficient number, since it is larger than the sum of its proper divisors (10968248288291).

68557144430173 is a wasteful number, since it uses less digits than its factorization.

68557144430173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545711412.

The product of its (nonzero) digits is 33868800, while the sum is 58.

The spelling of 68557144430173 in words is "sixty-eight trillion, five hundred fifty-seven billion, one hundred forty-four million, four hundred thirty thousand, one hundred seventy-three".