23021019999 has 24 divisors (see below), whose sum is σ = 36739433952. Its totient is φ = 13816535040.

The previous prime is 23021019947. The next prime is 23021020003. The reversal of 23021019999 is 99991012032.

It is not a de Polignac number, because 23021019999 - 2⁹ = 23021019487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021014999) 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 23 ways as a sum of consecutive naturals, for example, 3267442 + ... + 3274479.

It is an arithmetic number, because the mean of its divisors is an integer number (1530809748).

Almost surely, 2^23021019999 is an apocalyptic number.

23021019999 is a deficient number, since it is larger than the sum of its proper divisors (13718413953).

23021019999 is a wasteful number, since it uses less digits than its factorization.

23021019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541967 (or 6541964 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The spelling of 23021019999 in words is "twenty-three billion, twenty-one million, nineteen thousand, nine hundred ninety-nine".