65260968381 has 64 divisors (see below), whose sum is σ = 117050572800. Its totient is φ = 35081503488.

The previous prime is 65260968349. The next prime is 65260968389. The reversal of 65260968381 is 18386906256.

It is a happy number.

It is not a de Polignac number, because 65260968381 - 2⁵ = 65260968349 is a prime.

It is a super-2 number, since 2×65260968381² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65260968389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9709540 + ... + 9716258.

It is an arithmetic number, because the mean of its divisors is an integer number (1828915200).

Almost surely, 2^65260968381 is an apocalyptic number.

It is an amenable number.

65260968381 is a deficient number, since it is larger than the sum of its proper divisors (51789604419).

65260968381 is a wasteful number, since it uses less digits than its factorization.

65260968381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9775 (or 9769 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 65260968381 in words is "sixty-five billion, two hundred sixty million, nine hundred sixty-eight thousand, three hundred eighty-one".