65439834827481 has 40 divisors (see below), whose sum is σ = 99851401077120. Its totient is φ = 42691622523552.

The previous prime is 65439834827461. The next prime is 65439834827519. The reversal of 65439834827481 is 18472843893456.

65439834827481 is a `hidden beast` number, since 6 + 5 + 4 + 3 + 9 + 8 + 348 + 274 + 8 + 1 = 666.

It is not a de Polignac number, because 65439834827481 - 2⁵ = 65439834827449 is a prime.

It is a super-2 number, since 2×65439834827481² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65439834827461) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22937515 + ... + 25632191.

It is an arithmetic number, because the mean of its divisors is an integer number (2496285026928).

Almost surely, 2^{65439834827481} is an apocalyptic number.

It is an amenable number.

65439834827481 is a deficient number, since it is larger than the sum of its proper divisors (34411566249639).

65439834827481 is a wasteful number, since it uses less digits than its factorization.

65439834827481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701115 (or 2701106 counting only the distinct ones).

The product of its digits is 1114767360, while the sum is 72.

The spelling of 65439834827481 in words is "sixty-five trillion, four hundred thirty-nine billion, eight hundred thirty-four million, eight hundred twenty-seven thousand, four hundred eighty-one".