2123564663 has 8 divisors (see below), whose sum is σ = 2317729680. Its totient is φ = 1929585280.

The previous prime is 2123564657. The next prime is 2123564713. The reversal of 2123564663 is 3664653212.

It is a happy number.

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 2123564663 - 2¹⁰ = 2123563639 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 (2123564623) 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, 21920 + ... + 68757.

It is an arithmetic number, because the mean of its divisors is an integer number (289716210).

Almost surely, 2^2123564663 is an apocalyptic number.

2123564663 is a deficient number, since it is larger than the sum of its proper divisors (194165017).

2123564663 is a wasteful number, since it uses less digits than its factorization.

2123564663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92817.

The product of its digits is 155520, while the sum is 38.

The square root of 2123564663 is about 46082.1512410174. The cubic root of 2123564663 is about 1285.3512669471.

The spelling of 2123564663 in words is "two billion, one hundred twenty-three million, five hundred sixty-four thousand, six hundred sixty-three".