66663407527 has 8 divisors (see below), whose sum is σ = 67093985952. Its totient is φ = 66233203200.

The previous prime is 66663407519. The next prime is 66663407549. The reversal of 66663407527 is 72570436666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66663407527 - 2³ = 66663407519 is a prime.

It is a super-2 number, since 2×66663407527² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66663401527) 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 7 ways as a sum of consecutive naturals, for example, 268527 + ... + 453247.

It is an arithmetic number, because the mean of its divisors is an integer number (8386748244).

Almost surely, 2^66663407527 is an apocalyptic number.

66663407527 is a deficient number, since it is larger than the sum of its proper divisors (430578425).

66663407527 is a wasteful number, since it uses less digits than its factorization.

66663407527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187049.

The product of its (nonzero) digits is 7620480, while the sum is 52.

The spelling of 66663407527 in words is "sixty-six billion, six hundred sixty-three million, four hundred seven thousand, five hundred twenty-seven".