66355655366 has 192 divisors, whose sum is σ = 142743513600. Its totient is φ = 22587776640.

The previous prime is 66355655351. The next prime is 66355655393.

66355655366 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59833220 + ... + 59834328.

It is an arithmetic number, because the mean of its divisors is an integer number (743455800).

Almost surely, 2^66355655366 is an apocalyptic number.

66355655366 is an abundant number, since it is smaller than the sum of its proper divisors (76387858234).

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

66355655366 is a wasteful number, since it uses less digits than its factorization.

66355655366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196 (or 1161 counting only the distinct ones).

The product of its digits is 43740000, while the sum is 56.

The spelling of 66355655366 in words is "sixty-six billion, three hundred fifty-five million, six hundred fifty-five thousand, three hundred sixty-six".