66528824437 has 8 divisors (see below), whose sum is σ = 70461436032. Its totient is φ = 62598340800.

The previous prime is 66528824431. The next prime is 66528824459. The reversal of 66528824437 is 73442882566.

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 66528824437 - 2³ = 66528824429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66528824431) 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, 467389 + ... + 592882.

It is an arithmetic number, because the mean of its divisors is an integer number (8807679504).

Almost surely, 2^66528824437 is an apocalyptic number.

It is an amenable number.

66528824437 is a deficient number, since it is larger than the sum of its proper divisors (3932611595).

66528824437 is a wasteful number, since it uses less digits than its factorization.

66528824437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063979.

The product of its digits is 15482880, while the sum is 55.

It can be divided in two parts, 665288 and 24437, that added together give a triangular number (689725 = T₁₁₇₄).

The spelling of 66528824437 in words is "sixty-six billion, five hundred twenty-eight million, eight hundred twenty-four thousand, four hundred thirty-seven".