66882878311 has 2 divisors, whose sum is σ = 66882878312. Its totient is φ = 66882878310.

The previous prime is 66882878213. The next prime is 66882878333. The reversal of 66882878311 is 11387828866.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66882878311 - 2¹⁵ = 66882845543 is a prime.

It is a super-2 number, since 2×66882878311² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66882578311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33441439155 + 33441439156.

It is an arithmetic number, because the mean of its divisors is an integer number (33441439156).

Almost surely, 2^66882878311 is an apocalyptic number.

66882878311 is a deficient number, since it is larger than the sum of its proper divisors (1).

66882878311 is an equidigital number, since it uses as much as digits as its factorization.

66882878311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 58.

The spelling of 66882878311 in words is "sixty-six billion, eight hundred eighty-two million, eight hundred seventy-eight thousand, three hundred eleven".