65647642764075 has 12 divisors (see below), whose sum is σ = 108537436036728. Its totient is φ = 35012076140800.

The previous prime is 65647642764071. The next prime is 65647642764083. The reversal of 65647642764075 is 57046724674656.

It is not a de Polignac number, because 65647642764075 - 2² = 65647642764071 is a prime.

It is a super-2 number, since 2×65647642764075² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65647642764071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437650951686 + ... + 437650951835.

It is an arithmetic number, because the mean of its divisors is an integer number (9044786336394).

Almost surely, 2^{65647642764075} is an apocalyptic number.

65647642764075 is a deficient number, since it is larger than the sum of its proper divisors (42889793272653).

65647642764075 is a wasteful number, since it uses less digits than its factorization.

65647642764075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875301903534 (or 875301903529 counting only the distinct ones).

The product of its (nonzero) digits is 1422489600, while the sum is 69.

The spelling of 65647642764075 in words is "sixty-five trillion, six hundred forty-seven billion, six hundred forty-two million, seven hundred sixty-four thousand, seventy-five".