66061344404 has 36 divisors (see below), whose sum is σ = 127132891200. Its totient is φ = 30013624080.

The previous prime is 66061344403. The next prime is 66061344409. The reversal of 66061344404 is 40444316066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66061344403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1023317 + ... + 1085955.

It is an arithmetic number, because the mean of its divisors is an integer number (3531469200).

Almost surely, 2^66061344404 is an apocalyptic number.

It is an amenable number.

66061344404 is a deficient number, since it is larger than the sum of its proper divisors (61071546796).

66061344404 is a wasteful number, since it uses less digits than its factorization.

66061344404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64844 (or 64831 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 66061344404 in words is "sixty-six billion, sixty-one million, three hundred forty-four thousand, four hundred four".