123917210089 has 4 divisors (see below), whose sum is σ = 123931375956. Its totient is φ = 123903044224.

The previous prime is 123917210077. The next prime is 123917210111. The reversal of 123917210089 is 980012719321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55652584464 + 68264625625 = 235908^2 + 261275^2 .

It is a cyclic number.

It is not a de Polignac number, because 123917210089 - 2¹³ = 123917201897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123917210029) 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, 7069804 + ... + 7087309.

It is an arithmetic number, because the mean of its divisors is an integer number (30982843989).

Almost surely, 2^123917210089 is an apocalyptic number.

It is an amenable number.

123917210089 is a deficient number, since it is larger than the sum of its proper divisors (14165867).

123917210089 is an equidigital number, since it uses as much as digits as its factorization.

123917210089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14165866.

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 123917210089 in words is "one hundred twenty-three billion, nine hundred seventeen million, two hundred ten thousand, eighty-nine".