173438540628028 has 18 divisors (see below), whose sum is σ = 328660903173624. Its totient is φ = 80048557212624.

The previous prime is 173438540627921. The next prime is 173438540628079. The reversal of 173438540628028 is 820826045834371.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128282943576 + ... + 128282944927.

Almost surely, 2^{173438540628028} is an apocalyptic number.

It is an amenable number.

173438540628028 is a deficient number, since it is larger than the sum of its proper divisors (155222362545596).

173438540628028 is a wasteful number, since it uses less digits than its factorization.

173438540628028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256565888533 (or 256565888518 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 61.

The spelling of 173438540628028 in words is "one hundred seventy-three trillion, four hundred thirty-eight billion, five hundred forty million, six hundred twenty-eight thousand, twenty-eight".