66202454871 has 16 divisors (see below), whose sum is σ = 112088812800. Its totient is φ = 37829974104.

The previous prime is 66202454863. The next prime is 66202454911. The reversal of 66202454871 is 17845420266.

66202454871 is a `hidden beast` number, since 66 + 20 + 24 + 548 + 7 + 1 = 666.

It is not a de Polignac number, because 66202454871 - 2³ = 66202454863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66202454821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175138581 + ... + 175138958.

It is an arithmetic number, because the mean of its divisors is an integer number (7005550800).

Almost surely, 2^66202454871 is an apocalyptic number.

66202454871 is a deficient number, since it is larger than the sum of its proper divisors (45886357929).

66202454871 is a wasteful number, since it uses less digits than its factorization.

66202454871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350277555 (or 350277549 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 66202454871 in words is "sixty-six billion, two hundred two million, four hundred fifty-four thousand, eight hundred seventy-one".