66355304886 has 96 divisors (see below), whose sum is σ = 160393239552. Its totient is φ = 19687976640.

The previous prime is 66355304861. The next prime is 66355304887. The reversal of 66355304886 is 68840355366.

It is a happy number.

66355304886 is a `hidden beast` number, since 6 + 6 + 3 + 553 + 0 + 4 + 8 + 86 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66355304887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2036721 + ... + 2069043.

It is an arithmetic number, because the mean of its divisors is an integer number (1670762912).

Almost surely, 2^66355304886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66355304886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80196619776).

66355304886 is an abundant number, since it is smaller than the sum of its proper divisors (94037934666).

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

66355304886 is a wasteful number, since it uses less digits than its factorization.

66355304886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32658 (or 32655 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 66355304886 in words is "sixty-six billion, three hundred fifty-five million, three hundred four thousand, eight hundred eighty-six".