66887822465 has 8 divisors (see below), whose sum is σ = 82132024128. Its totient is φ = 52265833200.

The previous prime is 66887822453. The next prime is 66887822479. The reversal of 66887822465 is 56422878866.

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

It is not a de Polignac number, because 66887822465 - 2¹⁸ = 66887560321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66887822398 and 66887822407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155552861 + ... + 155553290.

It is an arithmetic number, because the mean of its divisors is an integer number (10266503016).

Almost surely, 2^66887822465 is an apocalyptic number.

It is an amenable number.

66887822465 is a deficient number, since it is larger than the sum of its proper divisors (15244201663).

66887822465 is a wasteful number, since it uses less digits than its factorization.

66887822465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311106199.

The product of its digits is 61931520, while the sum is 62.

The spelling of 66887822465 in words is "sixty-six billion, eight hundred eighty-seven million, eight hundred twenty-two thousand, four hundred sixty-five".