23721008642783 has 4 divisors (see below), whose sum is σ = 23721022324680. Its totient is φ = 23720994960888.

The previous prime is 23721008642689. The next prime is 23721008642791. The reversal of 23721008642783 is 38724680012732.

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 23721008642783 - 2¹² = 23721008638687 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 (23721008642183) 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, 3785393 + ... + 7859466.

It is an arithmetic number, because the mean of its divisors is an integer number (5930255581170).

Almost surely, 2^{23721008642783} is an apocalyptic number.

23721008642783 is a deficient number, since it is larger than the sum of its proper divisors (13681897).

23721008642783 is a wasteful number, since it uses less digits than its factorization.

23721008642783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13681896.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 23721008642783 in words is "twenty-three trillion, seven hundred twenty-one billion, eight million, six hundred forty-two thousand, seven hundred eighty-three".