66144060834 has 8 divisors (see below), whose sum is σ = 132288121680. Its totient is φ = 22048020276.

The previous prime is 66144060833. The next prime is 66144060889. The reversal of 66144060834 is 43806044166.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

66144060834 is an admirable number.

It is a super-2 number, since 2×66144060834² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66144060833) 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, 5512005064 + ... + 5512005075.

It is an arithmetic number, because the mean of its divisors is an integer number (16536015210).

Almost surely, 2^66144060834 is an apocalyptic number.

66144060834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66144060834 is a wasteful number, since it uses less digits than its factorization.

66144060834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11024010144.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 66144060834 in words is "sixty-six billion, one hundred forty-four million, sixty thousand, eight hundred thirty-four".