128754054497 has 4 divisors (see below), whose sum is σ = 128796818736. Its totient is φ = 128711290260.

The previous prime is 128754054463. The next prime is 128754054503. The reversal of 128754054497 is 794450457821.

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: 794450457821 = 1931 ⋅411419191.

It is a cyclic number.

It is not a de Polignac number, because 128754054497 - 2²⁴ = 128737277281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128754050497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21377603 + ... + 21383624.

It is an arithmetic number, because the mean of its divisors is an integer number (32199204684).

Almost surely, 2^128754054497 is an apocalyptic number.

It is an amenable number.

128754054497 is a deficient number, since it is larger than the sum of its proper divisors (42764239).

128754054497 is an equidigital number, since it uses as much as digits as its factorization.

128754054497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42764238.

The product of its (nonzero) digits is 11289600, while the sum is 56.

The spelling of 128754054497 in words is "one hundred twenty-eight billion, seven hundred fifty-four million, fifty-four thousand, four hundred ninety-seven".