65271217000072 has 8 divisors (see below), whose sum is σ = 122383531875150. Its totient is φ = 32635608500032.

The previous prime is 65271217000063. The next prime is 65271217000079. The reversal of 65271217000072 is 27000071217256.

It can be written as a sum of positive squares in only one way, i.e., 65268075845956 + 3141154116 = 8078866^2 + 56046^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 65271216999989 and 65271217000034.

It is not an unprimeable number, because it can be changed into a prime (65271217000079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4079451062497 + ... + 4079451062512.

Almost surely, 2^{65271217000072} is an apocalyptic number.

It is an amenable number.

65271217000072 is a deficient number, since it is larger than the sum of its proper divisors (57112314875078).

65271217000072 is a wasteful number, since it uses less digits than its factorization.

65271217000072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158902125015 (or 8158902125011 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 65271217000072 in words is "sixty-five trillion, two hundred seventy-one billion, two hundred seventeen million, seventy-two", and thus it is an aban number.