128248786707143 has 4 divisors (see below), whose sum is σ = 130162947702840. Its totient is φ = 126334625711448.

The previous prime is 128248786707137. The next prime is 128248786707149. The reversal of 128248786707143 is 341707687842821.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (128248786707137) and next prime (128248786707149).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128248786707143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128248786707149) 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, 957080497748 + ... + 957080497881.

It is an arithmetic number, because the mean of its divisors is an integer number (32540736925710).

Almost surely, 2^{128248786707143} is an apocalyptic number.

128248786707143 is a deficient number, since it is larger than the sum of its proper divisors (1914160995697).

128248786707143 is an equidigital number, since it uses as much as digits as its factorization.

128248786707143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914160995696.

The product of its (nonzero) digits is 202309632, while the sum is 68.

The spelling of 128248786707143 in words is "one hundred twenty-eight trillion, two hundred forty-eight billion, seven hundred eighty-six million, seven hundred seven thousand, one hundred forty-three".