65240616266 has 16 divisors (see below), whose sum is σ = 112276241856. Its totient is φ = 27851467776.

The previous prime is 65240616251. The next prime is 65240616269. The reversal of 65240616266 is 66261604256.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65240616269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9062636 + ... + 9069831.

It is an arithmetic number, because the mean of its divisors is an integer number (7017265116).

Almost surely, 2^65240616266 is an apocalyptic number.

65240616266 is a deficient number, since it is larger than the sum of its proper divisors (47035625590).

65240616266 is a wasteful number, since it uses less digits than its factorization.

65240616266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18132733.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 65240616266 in words is "sixty-five billion, two hundred forty million, six hundred sixteen thousand, two hundred sixty-six".