65012320655526 has 32 divisors (see below), whose sum is σ = 131893468363008. Its totient is φ = 21359475960480.

The previous prime is 65012320655483. The next prime is 65012320655537. The reversal of 65012320655526 is 62555602321056.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20197960 + ... + 23194443.

It is an arithmetic number, because the mean of its divisors is an integer number (4121670886344).

Almost surely, 2^{65012320655526} is an apocalyptic number.

65012320655526 is an abundant number, since it is smaller than the sum of its proper divisors (66881147707482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65012320655526 is a wasteful number, since it uses less digits than its factorization.

65012320655526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43395996.

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 65012320655526 in words is "sixty-five trillion, twelve billion, three hundred twenty million, six hundred fifty-five thousand, five hundred twenty-six".