65510292481 has 12 divisors (see below), whose sum is σ = 66634987692. Its totient is φ = 64404288000.

The previous prime is 65510292479. The next prime is 65510292493. The reversal of 65510292481 is 18429201556.

It can be written as a sum of positive squares in 6 ways, for example, as 23659361856 + 41850930625 = 153816^2 + 204575^2 .

It is not a de Polignac number, because 65510292481 - 2¹ = 65510292479 is a prime.

It is a super-2 number, since 2×65510292481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65510290481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11610421 + ... + 11616061.

It is an arithmetic number, because the mean of its divisors is an integer number (5552915641).

Almost surely, 2^65510292481 is an apocalyptic number.

65510292481 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

65510292481 is a deficient number, since it is larger than the sum of its proper divisors (1124695211).

65510292481 is an equidigital number, since it uses as much as digits as its factorization.

65510292481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8884 (or 8823 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 65510292481 in words is "sixty-five billion, five hundred ten million, two hundred ninety-two thousand, four hundred eighty-one".