2216666225451 has 16 divisors (see below), whose sum is σ = 2991049436160. Its totient is φ = 1460091343200.

The previous prime is 2216666225393. The next prime is 2216666225467. The reversal of 2216666225451 is 1545226666122.

It is not a de Polignac number, because 2216666225451 - 2⁹ = 2216666224939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2216666225451.

It is not an unprimeable number, because it can be changed into a prime (2216666225471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7491325 + ... + 7781598.

It is an arithmetic number, because the mean of its divisors is an integer number (186940589760).

Almost surely, 2^{2216666225451} is an apocalyptic number.

2216666225451 is a deficient number, since it is larger than the sum of its proper divisors (774383210709).

2216666225451 is a wasteful number, since it uses less digits than its factorization.

2216666225451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15273506.

The product of its digits is 2073600, while the sum is 48.

The spelling of 2216666225451 in words is "two trillion, two hundred sixteen billion, six hundred sixty-six million, two hundred twenty-five thousand, four hundred fifty-one".