65506668327 has 32 divisors (see below), whose sum is σ = 102999936960. Its totient is φ = 41004472320.

The previous prime is 65506668319. The next prime is 65506668343. The reversal of 65506668327 is 72386660556.

It is a happy number.

It is not a de Polignac number, because 65506668327 - 2³ = 65506668319 is a prime.

It is a super-2 number, since 2×65506668327² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65506668317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23743 + ... + 362735.

It is an arithmetic number, because the mean of its divisors is an integer number (3218748030).

Almost surely, 2^65506668327 is an apocalyptic number.

65506668327 is a deficient number, since it is larger than the sum of its proper divisors (37493268633).

65506668327 is a wasteful number, since it uses less digits than its factorization.

65506668327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339440 (or 339434 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 65506668327 in words is "sixty-five billion, five hundred six million, six hundred sixty-eight thousand, three hundred twenty-seven".