66075565077311 has 4 divisors (see below), whose sum is σ = 66075784544352. Its totient is φ = 66075345610272.

The previous prime is 66075565077299. The next prime is 66075565077337. The reversal of 66075565077311 is 11377056557066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66075565077311 is a prime.

It is a super-2 number, since 2×66075565077311² (a number of 28 digits) contains 22 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 (66075565070311) 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, 109281290 + ... + 109884263.

It is an arithmetic number, because the mean of its divisors is an integer number (16518946136088).

Almost surely, 2^{66075565077311} is an apocalyptic number.

66075565077311 is a deficient number, since it is larger than the sum of its proper divisors (219467041).

66075565077311 is a wasteful number, since it uses less digits than its factorization.

66075565077311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219467040.

The product of its (nonzero) digits is 27783000, while the sum is 59.

The spelling of 66075565077311 in words is "sixty-six trillion, seventy-five billion, five hundred sixty-five million, seventy-seven thousand, three hundred eleven".