66652025667 has 8 divisors (see below), whose sum is σ = 88893670080. Its totient is φ = 44422532520.

The previous prime is 66652025653. The next prime is 66652025689. The reversal of 66652025667 is 76652025666.

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

It is not a de Polignac number, because 66652025667 - 2⁶ = 66652025603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66652027667) by changing a digit.

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, 3025009 + ... + 3046962.

It is an arithmetic number, because the mean of its divisors is an integer number (11111708760).

Almost surely, 2^66652025667 is an apocalyptic number.

66652025667 is a deficient number, since it is larger than the sum of its proper divisors (22241644413).

66652025667 is a wasteful number, since it uses less digits than its factorization.

66652025667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6075633.

The product of its (nonzero) digits is 5443200, while the sum is 51.

Subtracting 66652025667 from its reverse (76652025666), we obtain a palindrome (9999999999).

The spelling of 66652025667 in words is "sixty-six billion, six hundred fifty-two million, twenty-five thousand, six hundred sixty-seven".