66201334587 has 40 divisors (see below), whose sum is σ = 99426362112. Its totient is φ = 43896870000.

The previous prime is 66201334553. The next prime is 66201334597. The reversal of 66201334587 is 78543310266.

66201334587 is a `hidden beast` number, since 6 + 6 + 20 + 13 + 34 + 587 = 666.

It is not a de Polignac number, because 66201334587 - 2¹⁴ = 66201318203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66201334597) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18031762 + ... + 18035432.

Almost surely, 2^66201334587 is an apocalyptic number.

66201334587 is a deficient number, since it is larger than the sum of its proper divisors (33225027525).

66201334587 is a wasteful number, since it uses less digits than its factorization.

66201334587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4821 (or 4812 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 66201334587 in words is "sixty-six billion, two hundred one million, three hundred thirty-four thousand, five hundred eighty-seven".