23018919999 has 16 divisors (see below), whose sum is σ = 31218821760. Its totient is φ = 15084669600.

The previous prime is 23018919991. The next prime is 23018920009. The reversal of 23018919999 is 99991981032.

It is not a de Polignac number, because 23018919999 - 2³ = 23018919991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23018919991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231157 + ... + 315390.

It is an arithmetic number, because the mean of its divisors is an integer number (1951176360).

Almost surely, 2^23018919999 is an apocalyptic number.

23018919999 is a deficient number, since it is larger than the sum of its proper divisors (8199901761).

23018919999 is a wasteful number, since it uses less digits than its factorization.

23018919999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546790.

The product of its (nonzero) digits is 2834352, while the sum is 60.

The spelling of 23018919999 in words is "twenty-three billion, eighteen million, nine hundred nineteen thousand, nine hundred ninety-nine".