66144841326 has 32 divisors (see below), whose sum is σ = 147007850400. Its totient is φ = 22045383360.

The previous prime is 66144841297. The next prime is 66144841339. The reversal of 66144841326 is 62314844166.

66144841326 is a `hidden beast` number, since 6 + 614 + 4 + 8 + 4 + 1 + 3 + 26 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356016 + ... + 508956.

It is an arithmetic number, because the mean of its divisors is an integer number (4593995325).

Almost surely, 2^66144841326 is an apocalyptic number.

66144841326 is an abundant number, since it is smaller than the sum of its proper divisors (80863009074).

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

66144841326 is a wasteful number, since it uses less digits than its factorization.

66144841326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160961 (or 160955 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The spelling of 66144841326 in words is "sixty-six billion, one hundred forty-four million, eight hundred forty-one thousand, three hundred twenty-six".