23193544375541 has 2 divisors, whose sum is σ = 23193544375542. Its totient is φ = 23193544375540.

The previous prime is 23193544375531. The next prime is 23193544375553. The reversal of 23193544375541 is 14557344539132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15316625013316 + 7876919362225 = 3913646^2 + 2806585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23193544375541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23193544375531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11596772187770 + 11596772187771.

It is an arithmetic number, because the mean of its divisors is an integer number (11596772187771).

Almost surely, 2^{23193544375541} is an apocalyptic number.

It is an amenable number.

23193544375541 is a deficient number, since it is larger than the sum of its proper divisors (1).

23193544375541 is an equidigital number, since it uses as much as digits as its factorization.

23193544375541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216000, while the sum is 56.

The spelling of 23193544375541 in words is "twenty-three trillion, one hundred ninety-three billion, five hundred forty-four million, three hundred seventy-five thousand, five hundred forty-one".