66002234281 has 9 divisors (see below), whose sum is σ = 66386993373. Its totient is φ = 65619696780.

The previous prime is 66002234251. The next prime is 66002234339. The reversal of 66002234281 is 18243220066.

The square root of 66002234281 is 256909.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 66002234281 - 2¹³ = 66002226089 is a prime.

It is a super-2 number, since 2×66002234281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66002234251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 51124246 + ... + 51125536.

It is an arithmetic number, because the mean of its divisors is an integer number (7376332597).

Almost surely, 2^66002234281 is an apocalyptic number.

66002234281 is the 256909-th square number.

66002234281 is the 128455-th centered octagonal number.

It is an amenable number.

66002234281 is a deficient number, since it is larger than the sum of its proper divisors (384759092).

66002234281 is an frugal number, since it uses more digits than its factorization.

66002234281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 66002234281 in words is "sixty-six billion, two million, two hundred thirty-four thousand, two hundred eighty-one".