66005111436612 has 12 divisors (see below), whose sum is σ = 154011926685456. Its totient is φ = 22001703812200.

The previous prime is 66005111436611. The next prime is 66005111436613. The reversal of 66005111436612 is 21663411150066.

It is an interprime number because it is at equal distance from previous prime (66005111436611) and next prime (66005111436613).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (66005111436611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2750212976514 + ... + 2750212976537.

It is an arithmetic number, because the mean of its divisors is an integer number (12834327223788).

Almost surely, 2^{66005111436612} is an apocalyptic number.

It is an amenable number.

66005111436612 is an abundant number, since it is smaller than the sum of its proper divisors (88006815248844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66005111436612 is a wasteful number, since it uses less digits than its factorization.

66005111436612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500425953058 (or 5500425953056 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

Adding to 66005111436612 its reverse (21663411150066), we get a palindrome (87668522586678).

The spelling of 66005111436612 in words is "sixty-six trillion, five billion, one hundred eleven million, four hundred thirty-six thousand, six hundred twelve".