23309783493 has 16 divisors (see below), whose sum is σ = 31194480000. Its totient is φ = 15482548224.

The previous prime is 23309783467. The next prime is 23309783521. The reversal of 23309783493 is 39438790332.

It is a happy number.

It is not a de Polignac number, because 23309783493 - 2⁹ = 23309782981 is a prime.

It is a super-3 number, since 3×23309783493³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23309783293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1313880 + ... + 1331502.

It is an arithmetic number, because the mean of its divisors is an integer number (1949655000).

Almost surely, 2^23309783493 is an apocalyptic number.

It is an amenable number.

23309783493 is a deficient number, since it is larger than the sum of its proper divisors (7884696507).

23309783493 is a wasteful number, since it uses less digits than its factorization.

23309783493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19228.

The product of its (nonzero) digits is 2939328, while the sum is 51.

The spelling of 23309783493 in words is "twenty-three billion, three hundred nine million, seven hundred eighty-three thousand, four hundred ninety-three".