65172618577936 has 45 divisors (see below), whose sum is σ = 129779319711069. Its totient is φ = 31705016974272.

The previous prime is 65172618577879. The next prime is 65172618577951. The reversal of 65172618577936 is 63977581627156.

The square root of 65172618577936 is 8072956.

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., 58317354096400 + 6855264481536 = 7636580^2 + 2618256^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1194770215 + ... + 1194824761.

Almost surely, 2^{65172618577936} is an apocalyptic number.

65172618577936 is the 8072956-th square number.

It is an amenable number.

65172618577936 is a deficient number, since it is larger than the sum of its proper divisors (64606701133133).

65172618577936 is an frugal number, since it uses more digits than its factorization.

65172618577936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109176 (or 54586 counting only the distinct ones).

The product of its digits is 800150400, while the sum is 73.

The spelling of 65172618577936 in words is "sixty-five trillion, one hundred seventy-two billion, six hundred eighteen million, five hundred seventy-seven thousand, nine hundred thirty-six".