20132123009 has 8 divisors (see below), whose sum is σ = 20162917248. Its totient is φ = 20101349520.

The previous prime is 20132122937. The next prime is 20132123023. The reversal of 20132123009 is 90032123102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132123009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20132123309) 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, 3871199 + ... + 3876395.

It is an arithmetic number, because the mean of its divisors is an integer number (2520364656).

Almost surely, 2^20132123009 is an apocalyptic number.

It is an amenable number.

20132123009 is a deficient number, since it is larger than the sum of its proper divisors (30794239).

20132123009 is an equidigital number, since it uses as much as digits as its factorization.

20132123009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10375.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 20132123009 in words is "twenty billion, one hundred thirty-two million, one hundred twenty-three thousand, nine".