128306376041 has 4 divisors (see below), whose sum is σ = 131774115972. Its totient is φ = 124838636112.

The previous prime is 128306376019. The next prime is 128306376043. The reversal of 128306376041 is 140673603821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140673603821 = 54547 ⋅2578943.

It can be written as a sum of positive squares in 2 ways, for example, as 78307627225 + 49998748816 = 279835^2 + 223604^2 .

It is a cyclic number.

It is not a de Polignac number, because 128306376041 - 2³⁴ = 111126506857 is a prime.

It is a super-2 number, since 2×128306376041² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128306376041.

It is not an unprimeable number, because it can be changed into a prime (128306376043) 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, 1733869910 + ... + 1733869983.

It is an arithmetic number, because the mean of its divisors is an integer number (32943528993).

Almost surely, 2^128306376041 is an apocalyptic number.

It is an amenable number.

128306376041 is a deficient number, since it is larger than the sum of its proper divisors (3467739931).

128306376041 is an equidigital number, since it uses as much as digits as its factorization.

128306376041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467739930.

The product of its (nonzero) digits is 145152, while the sum is 41.

Adding to 128306376041 its reverse (140673603821), we get a palindrome (268979979862).

The spelling of 128306376041 in words is "one hundred twenty-eight billion, three hundred six million, three hundred seventy-six thousand, forty-one".