128323136530425 has 24 divisors (see below), whose sum is σ = 223327283227360. Its totient is φ = 64836953193600.

The previous prime is 128323136530417. The next prime is 128323136530469. The reversal of 128323136530425 is 524035631323821.

It is not a de Polignac number, because 128323136530425 - 2³ = 128323136530417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45025660516 + ... + 45025663365.

Almost surely, 2^{128323136530425} is an apocalyptic number.

128323136530425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128323136530425 is a deficient number, since it is larger than the sum of its proper divisors (95004146696935).

128323136530425 is a wasteful number, since it uses less digits than its factorization.

128323136530425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90051323913 (or 90051323908 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 128323136530425 in words is "one hundred twenty-eight trillion, three hundred twenty-three billion, one hundred thirty-six million, five hundred thirty thousand, four hundred twenty-five".