65220102581200 has 120 divisors (see below), whose sum is σ = 179125222716288. Its totient is φ = 22355002544640.

The previous prime is 65220102581111. The next prime is 65220102581201. The reversal of 65220102581200 is 218520102256.

It is a super-3 number, since 3×65220102581200³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65220102581201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6929814 + ... + 13358986.

Almost surely, 2^{65220102581200} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65220102581200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89562611358144).

65220102581200 is an abundant number, since it is smaller than the sum of its proper divisors (113905120135088).

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

65220102581200 is a wasteful number, since it uses less digits than its factorization.

65220102581200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432821 (or 6432810 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 65220102581200 its reverse (218520102256), we get a palindrome (65438622683456).

The spelling of 65220102581200 in words is "sixty-five trillion, two hundred twenty billion, one hundred two million, five hundred eighty-one thousand, two hundred".