128780153 has 4 divisors (see below), whose sum is σ = 128892048. Its totient is φ = 128668260.

The previous prime is 128780149. The next prime is 128780161. The reversal of 128780153 is 351087821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 351087821 = 7 ⋅50155403.

It is a cyclic number.

It is not a de Polignac number, because 128780153 - 2² = 128780149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128780143) 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, 54203 + ... + 56528.

It is an arithmetic number, because the mean of its divisors is an integer number (32223012).

Almost surely, 2^128780153 is an apocalyptic number.

It is an amenable number.

128780153 is a deficient number, since it is larger than the sum of its proper divisors (111895).

128780153 is a wasteful number, since it uses less digits than its factorization.

128780153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111894.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 128780153 is about 11348.1343400578. The cubic root of 128780153 is about 504.9902334483.

The spelling of 128780153 in words is "one hundred twenty-eight million, seven hundred eighty thousand, one hundred fifty-three".