66201024656 has 40 divisors (see below), whose sum is σ = 138258067584. Its totient is φ = 30526208640.

The previous prime is 66201024653. The next prime is 66201024667. The reversal of 66201024656 is 65642010266.

It is not an unprimeable number, because it can be changed into a prime (66201024653) 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 7 ways as a sum of consecutive naturals, for example, 81065 + ... + 372791.

Almost surely, 2^66201024656 is an apocalyptic number.

It is an amenable number.

66201024656 is an abundant number, since it is smaller than the sum of its proper divisors (72057042928).

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

66201024656 is a wasteful number, since it uses less digits than its factorization.

66201024656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292839 (or 292833 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 66201024656 in words is "sixty-six billion, two hundred one million, twenty-four thousand, six hundred fifty-six".