65966474443 has 16 divisors (see below), whose sum is σ = 66892573440. Its totient is φ = 65048842336.

The previous prime is 65966474429. The next prime is 65966474479. The reversal of 65966474443 is 34447466956.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65966474443 is a prime.

It is a super-3 number, since 3×65966474443³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65966424443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11104368 + ... + 11110306.

It is an arithmetic number, because the mean of its divisors is an integer number (4180785840).

Almost surely, 2^65966474443 is an apocalyptic number.

65966474443 is a deficient number, since it is larger than the sum of its proper divisors (926098997).

65966474443 is a wasteful number, since it uses less digits than its factorization.

65966474443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6626.

The product of its digits is 52254720, while the sum is 58.

The spelling of 65966474443 in words is "sixty-five billion, nine hundred sixty-six million, four hundred seventy-four thousand, four hundred forty-three".