66530441439 has 216 divisors, whose sum is σ = 130373792640. Its totient is φ = 32482296000.

The previous prime is 66530441407. The next prime is 66530441521. The reversal of 66530441439 is 93414403566.

66530441439 is a `hidden beast` number, since 66 + 530 + 44 + 14 + 3 + 9 = 666.

It is not a de Polignac number, because 66530441439 - 2⁵ = 66530441407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66530441394 and 66530441403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66530441039) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 213924094 + ... + 213924404.

Almost surely, 2^66530441439 is an apocalyptic number.

66530441439 is a deficient number, since it is larger than the sum of its proper divisors (63843351201).

66530441439 is a wasteful number, since it uses less digits than its factorization.

66530441439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 66530441439 in words is "sixty-six billion, five hundred thirty million, four hundred forty-one thousand, four hundred thirty-nine".