23743829509 has 4 divisors (see below), whose sum is σ = 23750965260. Its totient is φ = 23736693760.

The previous prime is 23743829479. The next prime is 23743829519. The reversal of 23743829509 is 90592834732.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16123412484 + 7620417025 = 126978^2 + 87295^2 .

It is a cyclic number.

It is not a de Polignac number, because 23743829509 - 2¹³ = 23743821317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23743829519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3562882 + ... + 3569539.

It is an arithmetic number, because the mean of its divisors is an integer number (5937741315).

Almost surely, 2^23743829509 is an apocalyptic number.

It is an amenable number.

23743829509 is a deficient number, since it is larger than the sum of its proper divisors (7135751).

23743829509 is an equidigital number, since it uses as much as digits as its factorization.

23743829509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135750.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 23743829509 in words is "twenty-three billion, seven hundred forty-three million, eight hundred twenty-nine thousand, five hundred nine".