128530580457 has 8 divisors (see below), whose sum is σ = 171867982176. Its totient is φ = 85440116192.

The previous prime is 128530580441. The next prime is 128530580471. The reversal of 128530580457 is 754085035821.

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 128530580457 - 2⁴ = 128530580441 is a prime.

It is a super-2 number, since 2×128530580457² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128530585457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61733148 + ... + 61735229.

It is an arithmetic number, because the mean of its divisors is an integer number (21483497772).

Almost surely, 2^128530580457 is an apocalyptic number.

It is an amenable number.

128530580457 is a deficient number, since it is larger than the sum of its proper divisors (43337401719).

128530580457 is a wasteful number, since it uses less digits than its factorization.

128530580457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123468727.

The product of its (nonzero) digits is 1344000, while the sum is 48.

The spelling of 128530580457 in words is "one hundred twenty-eight billion, five hundred thirty million, five hundred eighty thousand, four hundred fifty-seven".