23351328009 has 6 divisors (see below), whose sum is σ = 33729696026. Its totient is φ = 15567552000.

The previous prime is 23351327999. The next prime is 23351328023. The reversal of 23351328009 is 90082315332.

23351328009 is a `hidden beast` number, since 23 + 351 + 3 + 280 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21652239609 + 1699088400 = 147147^2 + 41220^2 .

It is not a de Polignac number, because 23351328009 - 2²⁷ = 23217110281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23351328109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1297295992 + ... + 1297296009.

Almost surely, 2^23351328009 is an apocalyptic number.

It is an amenable number.

23351328009 is a deficient number, since it is larger than the sum of its proper divisors (10378368017).

23351328009 is a wasteful number, since it uses less digits than its factorization.

23351328009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594592007 (or 2594592004 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 23351328009 in words is "twenty-three billion, three hundred fifty-one million, three hundred twenty-eight thousand, nine".