23033209987 has 4 divisors (see below), whose sum is σ = 23133791920. Its totient is φ = 22932628056.

The previous prime is 23033209957. The next prime is 23033210023. The reversal of 23033209987 is 78990233032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23033209987 - 2³¹ = 20885726339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23033209937) 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 3 ways as a sum of consecutive naturals, for example, 50290623 + ... + 50291080.

It is an arithmetic number, because the mean of its divisors is an integer number (5783447980).

Almost surely, 2^23033209987 is an apocalyptic number.

23033209987 is a deficient number, since it is larger than the sum of its proper divisors (100581933).

23033209987 is a wasteful number, since it uses less digits than its factorization.

23033209987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100581932.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 23033209987 in words is "twenty-three billion, thirty-three million, two hundred nine thousand, nine hundred eighty-seven".