65530440542331 has 24 divisors (see below), whose sum is σ = 98772355762080. Its totient is φ = 41786750244096.

The previous prime is 65530440542323. The next prime is 65530440542461. The reversal of 65530440542331 is 13324504403556.

65530440542331 is a `hidden beast` number, since 6 + 5 + 5 + 3 + 0 + 4 + 405 + 4 + 233 + 1 = 666.

It is not a de Polignac number, because 65530440542331 - 2³ = 65530440542323 is a prime.

It is a super-2 number, since 2×65530440542331² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65530440543331) 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, 8319075 + ... + 14151603.

It is an arithmetic number, because the mean of its divisors is an integer number (4115514823420).

Almost surely, 2^{65530440542331} is an apocalyptic number.

65530440542331 is a deficient number, since it is larger than the sum of its proper divisors (33241915219749).

65530440542331 is a wasteful number, since it uses less digits than its factorization.

65530440542331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886835 (or 5886832 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

Adding to 65530440542331 its reverse (13324504403556), we get a palindrome (78854944945887).

The spelling of 65530440542331 in words is "sixty-five trillion, five hundred thirty billion, four hundred forty million, five hundred forty-two thousand, three hundred thirty-one".