23640730054213 has 4 divisors (see below), whose sum is σ = 23964575671468. Its totient is φ = 23316884436960.

The previous prime is 23640730054211. The next prime is 23640730054217. The reversal of 23640730054213 is 31245003704632.

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 14616605909889 + 9024124144324 = 3823167^2 + 3004018^2 .

It is a cyclic number.

It is not a de Polignac number, because 23640730054213 - 2¹ = 23640730054211 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 (23640730054211) 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, 161922808518 + ... + 161922808663.

It is an arithmetic number, because the mean of its divisors is an integer number (5991143917867).

Almost surely, 2^{23640730054213} is an apocalyptic number.

It is an amenable number.

23640730054213 is a deficient number, since it is larger than the sum of its proper divisors (323845617255).

23640730054213 is an equidigital number, since it uses as much as digits as its factorization.

23640730054213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323845617254.

The product of its (nonzero) digits is 362880, while the sum is 40.

Adding to 23640730054213 its reverse (31245003704632), we get a palindrome (54885733758845).

The spelling of 23640730054213 in words is "twenty-three trillion, six hundred forty billion, seven hundred thirty million, fifty-four thousand, two hundred thirteen".