66223875476 has 36 divisors (see below), whose sum is σ = 127422078420. Its totient is φ = 30093043200.

The previous prime is 66223875463. The next prime is 66223875493. The reversal of 66223875476 is 67457832266.

It can be written as a sum of positive squares in 2 ways, for example, as 47965380100 + 18258495376 = 219010^2 + 135124^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1831460 + ... + 1867268.

Almost surely, 2^66223875476 is an apocalyptic number.

It is an amenable number.

66223875476 is a deficient number, since it is larger than the sum of its proper divisors (61198202944).

66223875476 is a wasteful number, since it uses less digits than its factorization.

66223875476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39656 (or 39643 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 56.

The spelling of 66223875476 in words is "sixty-six billion, two hundred twenty-three million, eight hundred seventy-five thousand, four hundred seventy-six".