667212110753 has 4 divisors (see below), whose sum is σ = 667221248148. Its totient is φ = 667202973360.

The previous prime is 667212110743. The next prime is 667212110801. The reversal of 667212110753 is 357011212766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 290728012864 + 376484097889 = 539192^2 + 613583^2 .

It is a cyclic number.

It is not a de Polignac number, because 667212110753 - 2¹² = 667212106657 is a prime.

It is a super-3 number, since 3×667212110753³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667212110753.

It is not an unprimeable number, because it can be changed into a prime (667212110743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4458278 + ... + 4605503.

It is an arithmetic number, because the mean of its divisors is an integer number (166805312037).

Almost surely, 2^667212110753 is an apocalyptic number.

It is an amenable number.

667212110753 is a deficient number, since it is larger than the sum of its proper divisors (9137395).

667212110753 is an equidigital number, since it uses as much as digits as its factorization.

667212110753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9137394.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 667212110753 in words is "six hundred sixty-seven billion, two hundred twelve million, one hundred ten thousand, seven hundred fifty-three".