128109471451 has 8 divisors (see below), whose sum is σ = 137969458704. Its totient is φ = 118250257440.

The previous prime is 128109471443. The next prime is 128109471517. The reversal of 128109471451 is 154174901821.

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 128109471451 - 2³ = 128109471443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128109471398 and 128109471407.

It is not an unprimeable number, because it can be changed into a prime (128109471431) 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, 177096 + ... + 536266.

It is an arithmetic number, because the mean of its divisors is an integer number (17246182338).

Almost surely, 2^128109471451 is an apocalyptic number.

128109471451 is a deficient number, since it is larger than the sum of its proper divisors (9859987253).

128109471451 is a wasteful number, since it uses less digits than its factorization.

128109471451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386621.

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 128109471451 in words is "one hundred twenty-eight billion, one hundred nine million, four hundred seventy-one thousand, four hundred fifty-one".