667648551011 has 8 divisors (see below), whose sum is σ = 719077384704. Its totient is φ = 616229896320.

The previous prime is 667648550939. The next prime is 667648551013. The reversal of 667648551011 is 110155846766.

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 667648551011 - 2¹⁰ = 667648549987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667648551013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2408246 + ... + 2671131.

It is an arithmetic number, because the mean of its divisors is an integer number (89884673088).

Almost surely, 2^667648551011 is an apocalyptic number.

667648551011 is a deficient number, since it is larger than the sum of its proper divisors (51428833693).

667648551011 is a wasteful number, since it uses less digits than its factorization.

667648551011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089501.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 667648551011 in words is "six hundred sixty-seven billion, six hundred forty-eight million, five hundred fifty-one thousand, eleven".