23556197843 has 4 divisors (see below), whose sum is σ = 23598489600. Its totient is φ = 23513906088.

The previous prime is 23556197761. The next prime is 23556197857. The reversal of 23556197843 is 34879165532.

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 23556197843 - 2¹⁴ = 23556181459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23556197143) 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 3 ways as a sum of consecutive naturals, for example, 21145043 + ... + 21146156.

It is an arithmetic number, because the mean of its divisors is an integer number (5899622400).

Almost surely, 2^23556197843 is an apocalyptic number.

23556197843 is a deficient number, since it is larger than the sum of its proper divisors (42291757).

23556197843 is an equidigital number, since it uses as much as digits as its factorization.

23556197843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42291756.

The product of its digits is 5443200, while the sum is 53.

The spelling of 23556197843 in words is "twenty-three billion, five hundred fifty-six million, one hundred ninety-seven thousand, eight hundred forty-three".