66340817411 has 16 divisors (see below), whose sum is σ = 76224140160. Its totient is φ = 57103159680.

The previous prime is 66340817369. The next prime is 66340817443. The reversal of 66340817411 is 11471804366.

It is a cyclic number.

It is not a de Polignac number, because 66340817411 - 2¹⁴ = 66340801027 is a prime.

It is a super-2 number, since 2×66340817411² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66340817611) 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, 282080 + ... + 460706.

It is an arithmetic number, because the mean of its divisors is an integer number (4764008760).

Almost surely, 2^66340817411 is an apocalyptic number.

66340817411 is a deficient number, since it is larger than the sum of its proper divisors (9883322749).

66340817411 is a wasteful number, since it uses less digits than its factorization.

66340817411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180434.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 66340817411 in words is "sixty-six billion, three hundred forty million, eight hundred seventeen thousand, four hundred eleven".