65066660957 has 16 divisors (see below), whose sum is σ = 73774571520. Its totient is φ = 57059996400.

The previous prime is 65066660929. The next prime is 65066660959. The reversal of 65066660957 is 75906666056.

It is a cyclic number.

It is not a de Polignac number, because 65066660957 - 2¹² = 65066656861 is a prime.

It is a super-3 number, since 3×65066660957³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65066660959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2387969 + ... + 2415062.

It is an arithmetic number, because the mean of its divisors is an integer number (4610910720).

Almost surely, 2^65066660957 is an apocalyptic number.

It is an amenable number.

65066660957 is a deficient number, since it is larger than the sum of its proper divisors (8707910563).

65066660957 is a wasteful number, since it uses less digits than its factorization.

65066660957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803104.

The product of its (nonzero) digits is 12247200, while the sum is 56.

The spelling of 65066660957 in words is "sixty-five billion, sixty-six million, six hundred sixty thousand, nine hundred fifty-seven".