65277852913728 has 420 divisors, whose sum is σ = 242411623841772. Its totient is φ = 17216136161280.

The previous prime is 65277852913711. The next prime is 65277852913733. The reversal of 65277852913728 is 82731925877256.

It is a happy number.

65277852913728 is a `hidden beast` number, since 6 + 5 + 2 + 7 + 78 + 529 + 1 + 3 + 7 + 28 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21932062516224 + 43345790397504 = 4683168^2 + 6583752^2 .

It is a super-2 number, since 2×65277852913728² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 6581763 + ... + 13186178.

Almost surely, 2^{65277852913728} is an apocalyptic number.

It is an amenable number.

65277852913728 is an abundant number, since it is smaller than the sum of its proper divisors (177133770928044).

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

65277852913728 is a wasteful number, since it uses less digits than its factorization.

65277852913728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19767992 (or 19767966 counting only the distinct ones).

The product of its digits is 711244800, while the sum is 72.

The spelling of 65277852913728 in words is "sixty-five trillion, two hundred seventy-seven billion, eight hundred fifty-two million, nine hundred thirteen thousand, seven hundred twenty-eight".