128923141745 has 8 divisors (see below), whose sum is σ = 154709730816. Its totient is φ = 103137206256.

The previous prime is 128923141741. The next prime is 128923141771. The reversal of 128923141745 is 547141329821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128923141745 - 2² = 128923141741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128923141745.

It is not an unprimeable number, because it can be changed into a prime (128923141741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569114 + ... + 762716.

It is an arithmetic number, because the mean of its divisors is an integer number (19338716352).

Almost surely, 2^128923141745 is an apocalyptic number.

It is an amenable number.

128923141745 is a deficient number, since it is larger than the sum of its proper divisors (25786589071).

128923141745 is a wasteful number, since it uses less digits than its factorization.

128923141745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326791.

The product of its digits is 483840, while the sum is 47.

The spelling of 128923141745 in words is "one hundred twenty-eight billion, nine hundred twenty-three million, one hundred forty-one thousand, seven hundred forty-five".