2215421363663 has 4 divisors (see below), whose sum is σ = 2215439258760. Its totient is φ = 2215403468568.

The previous prime is 2215421363647. The next prime is 2215421363669. The reversal of 2215421363663 is 3663631245122.

It is a happy number.

2215421363663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2215421363663 - 2⁴ = 2215421363647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215421363669) 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, 8760545 + ... + 9009882.

It is an arithmetic number, because the mean of its divisors is an integer number (553859814690).

Almost surely, 2^{2215421363663} is an apocalyptic number.

2215421363663 is a deficient number, since it is larger than the sum of its proper divisors (17895097).

2215421363663 is a wasteful number, since it uses less digits than its factorization.

2215421363663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17895096.

The product of its digits is 933120, while the sum is 44.

The spelling of 2215421363663 in words is "two trillion, two hundred fifteen billion, four hundred twenty-one million, three hundred sixty-three thousand, six hundred sixty-three".