128252417547243 has 8 divisors (see below), whose sum is σ = 186548970977856. Its totient is φ = 77728737907400.

The previous prime is 128252417547217. The next prime is 128252417547253. The reversal of 128252417547243 is 342745714252821.

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 128252417547243 - 2⁶ = 128252417547179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128252417547203) 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, 1943218447653 + ... + 1943218447718.

It is an arithmetic number, because the mean of its divisors is an integer number (23318621372232).

Almost surely, 2^{128252417547243} is an apocalyptic number.

128252417547243 is a deficient number, since it is larger than the sum of its proper divisors (58296553430613).

128252417547243 is a wasteful number, since it uses less digits than its factorization.

128252417547243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886436895385.

The product of its digits is 30105600, while the sum is 57.

The spelling of 128252417547243 in words is "one hundred twenty-eight trillion, two hundred fifty-two billion, four hundred seventeen million, five hundred forty-seven thousand, two hundred forty-three".