10666225661219 has 2 divisors, whose sum is σ = 10666225661220. Its totient is φ = 10666225661218.

The previous prime is 10666225661149. The next prime is 10666225661233. The reversal of 10666225661219 is 91216652266601.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (91216652266601) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10666225661219 is a prime.

It is a super-2 number, since 2×10666225661219² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10666225661269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333112830609 + 5333112830610.

It is an arithmetic number, because the mean of its divisors is an integer number (5333112830610).

Almost surely, 2^{10666225661219} is an apocalyptic number.

10666225661219 is a deficient number, since it is larger than the sum of its proper divisors (1).

10666225661219 is an equidigital number, since it uses as much as digits as its factorization.

10666225661219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 10666225661219 in words is "ten trillion, six hundred sixty-six billion, two hundred twenty-five million, six hundred sixty-one thousand, two hundred nineteen".