65622750019369 has 9 divisors (see below), whose sum is σ = 65671155489303. Its totient is φ = 65574380220192.

The previous prime is 65622750019339. The next prime is 65622750019373. The reversal of 65622750019369 is 96391005722656.

The square root of 65622750019369 is 8100787.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 47566029556969 + 18056720462400 = 6896813^2 + 4249320^2 .

It is not a de Polignac number, because 65622750019369 - 2¹⁹ = 65622749495081 is a prime.

It is a super-2 number, since 2×65622750019369² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65622750019339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16873937377 + ... + 16873941265.

It is an arithmetic number, because the mean of its divisors is an integer number (7296795054367).

Almost surely, 2^{65622750019369} is an apocalyptic number.

65622750019369 is the 8100787-th square number.

65622750019369 is the 4050394-th centered octagonal number.

It is an amenable number.

65622750019369 is a deficient number, since it is larger than the sum of its proper divisors (48405469934).

65622750019369 is an frugal number, since it uses more digits than its factorization.

65622750019369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944 (or 5972 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 61.

The spelling of 65622750019369 in words is "sixty-five trillion, six hundred twenty-two billion, seven hundred fifty million, nineteen thousand, three hundred sixty-nine".