65222597514240 has 396 divisors, whose sum is σ = 228211736890644. Its totient is φ = 17223702478848.

The previous prime is 65222597514227. The next prime is 65222597514241. The reversal of 65222597514240 is 4241579522256.

65222597514240 is a `hidden beast` number, since 6 + 5 + 2 + 2 + 2 + 597 + 5 + 1 + 4 + 2 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28722053615616 + 36500543898624 = 5359296^2 + 6041568^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65222597514241) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 488796012 + ... + 488929428.

Almost surely, 2^{65222597514240} is an apocalyptic number.

65222597514240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65222597514240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114105868445322).

65222597514240 is an abundant number, since it is smaller than the sum of its proper divisors (162989139376404).

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

65222597514240 is a wasteful number, since it uses less digits than its factorization.

65222597514240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133654 (or 133530 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 65222597514240 in words is "sixty-five trillion, two hundred twenty-two billion, five hundred ninety-seven million, five hundred fourteen thousand, two hundred forty".