3128127720573 has 4 divisors (see below), whose sum is σ = 4170836960768. Its totient is φ = 2085418480380.

The previous prime is 3128127720563. The next prime is 3128127720581. The reversal of 3128127720573 is 3750277218213.

3128127720573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3128127720573 - 2¹² = 3128127716477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128127720563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521354620093 + ... + 521354620098.

It is an arithmetic number, because the mean of its divisors is an integer number (1042709240192).

Almost surely, 2^{3128127720573} is an apocalyptic number.

It is an amenable number.

3128127720573 is a deficient number, since it is larger than the sum of its proper divisors (1042709240195).

3128127720573 is a wasteful number, since it uses less digits than its factorization.

3128127720573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042709240194.

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 3128127720573 in words is "three trillion, one hundred twenty-eight billion, one hundred twenty-seven million, seven hundred twenty thousand, five hundred seventy-three".