221623115663 has 8 divisors (see below), whose sum is σ = 224123372640. Its totient is φ = 219123083520.

The previous prime is 221623115647. The next prime is 221623115717. The reversal of 221623115663 is 366511326122.

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 221623115663 - 2⁴ = 221623115647 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 (221623111663) 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, 2663831 + ... + 2745767.

It is an arithmetic number, because the mean of its divisors is an integer number (28015421580).

Almost surely, 2^221623115663 is an apocalyptic number.

221623115663 is a deficient number, since it is larger than the sum of its proper divisors (2500256977).

221623115663 is an equidigital number, since it uses as much as digits as its factorization.

221623115663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112417.

The product of its digits is 77760, while the sum is 38.

The spelling of 221623115663 in words is "two hundred twenty-one billion, six hundred twenty-three million, one hundred fifteen thousand, six hundred sixty-three".