65128193800415 has 4 divisors (see below), whose sum is σ = 78153832560504. Its totient is φ = 52102555040328.

The previous prime is 65128193800393. The next prime is 65128193800429. The reversal of 65128193800415 is 51400839182156.

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

It is a cyclic number.

It is not a de Polignac number, because 65128193800415 - 2¹⁰ = 65128193799391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6512819380037 + ... + 6512819380046.

It is an arithmetic number, because the mean of its divisors is an integer number (19538458140126).

Almost surely, 2^{65128193800415} is an apocalyptic number.

65128193800415 is a deficient number, since it is larger than the sum of its proper divisors (13025638760089).

65128193800415 is a wasteful number, since it uses less digits than its factorization.

65128193800415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13025638760088.

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 65128193800415 in words is "sixty-five trillion, one hundred twenty-eight billion, one hundred ninety-three million, eight hundred thousand, four hundred fifteen".