23009209756 has 48 divisors (see below), whose sum is σ = 43865924256. Its totient is φ = 10496876544.

The previous prime is 23009209753. The next prime is 23009209771. The reversal of 23009209756 is 65790290032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23009209753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4774260 + ... + 4779076.

It is an arithmetic number, because the mean of its divisors is an integer number (913873422).

Almost surely, 2^23009209756 is an apocalyptic number.

23009209756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23009209756 is a deficient number, since it is larger than the sum of its proper divisors (20856714500).

23009209756 is a wasteful number, since it uses less digits than its factorization.

23009209756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878 (or 5876 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 43.

Adding to 23009209756 its reverse (65790290032), we get a palindrome (88799499788).

The spelling of 23009209756 in words is "twenty-three billion, nine million, two hundred nine thousand, seven hundred fifty-six".