66201464637 has 24 divisors (see below), whose sum is σ = 119219954880. Its totient is φ = 34390370880.

The previous prime is 66201464633. The next prime is 66201464663. The reversal of 66201464637 is 73646410266.

It is a happy number.

66201464637 is a `hidden beast` number, since 6 + 6 + 2 + 0 + 1 + 4 + 6 + 4 + 637 = 666.

It is not a de Polignac number, because 66201464637 - 2² = 66201464633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66201464592 and 66201464601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66201464633) 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 23 ways as a sum of consecutive naturals, for example, 47763712 + ... + 47765097.

It is an arithmetic number, because the mean of its divisors is an integer number (4967498120).

Almost surely, 2^66201464637 is an apocalyptic number.

It is an amenable number.

66201464637 is a deficient number, since it is larger than the sum of its proper divisors (53018490243).

66201464637 is a wasteful number, since it uses less digits than its factorization.

66201464637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95528833 (or 95528830 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 66201464637 in words is "sixty-six billion, two hundred one million, four hundred sixty-four thousand, six hundred thirty-seven".