66411259711 has 4 divisors (see below), whose sum is σ = 66918216024. Its totient is φ = 65904303400.

The previous prime is 66411259699. The next prime is 66411259723. The reversal of 66411259711 is 11795211466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11795211466 = 2 ⋅5897605733.

It is an interprime number because it is at equal distance from previous prime (66411259699) and next prime (66411259723).

It is a cyclic number.

It is not a de Polignac number, because 66411259711 - 2²³ = 66402871103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66411256711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253477960 + ... + 253478221.

It is an arithmetic number, because the mean of its divisors is an integer number (16729554006).

Almost surely, 2^66411259711 is an apocalyptic number.

66411259711 is a deficient number, since it is larger than the sum of its proper divisors (506956313).

66411259711 is a wasteful number, since it uses less digits than its factorization.

66411259711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506956312.

The product of its digits is 90720, while the sum is 43.

The spelling of 66411259711 in words is "sixty-six billion, four hundred eleven million, two hundred fifty-nine thousand, seven hundred eleven".