128343739655973 has 16 divisors (see below), whose sum is σ = 181208420568000. Its totient is φ = 80521734740736.

The previous prime is 128343739655927. The next prime is 128343739655983. The reversal of 128343739655973 is 379556937343821.

It is not a de Polignac number, because 128343739655973 - 2⁸ = 128343739655717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128343739655895 and 128343739655904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128343739655983) 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, 119311390 + ... + 120382287.

It is an arithmetic number, because the mean of its divisors is an integer number (11325526285500).

Almost surely, 2^{128343739655973} is an apocalyptic number.

It is an amenable number.

128343739655973 is a deficient number, since it is larger than the sum of its proper divisors (52864680912027).

128343739655973 is a wasteful number, since it uses less digits than its factorization.

128343739655973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239704196.

The product of its digits is 3086294400, while the sum is 75.

The spelling of 128343739655973 in words is "one hundred twenty-eight trillion, three hundred forty-three billion, seven hundred thirty-nine million, six hundred fifty-five thousand, nine hundred seventy-three".