23520040811 has 2 divisors, whose sum is σ = 23520040812. Its totient is φ = 23520040810.

The previous prime is 23520040801. The next prime is 23520040867. The reversal of 23520040811 is 11804002532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23520040811 - 2¹⁴ = 23520024427 is a prime.

It is a super-3 number, since 3×23520040811³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (23520040801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11760020405 + 11760020406.

It is an arithmetic number, because the mean of its divisors is an integer number (11760020406).

Almost surely, 2^23520040811 is an apocalyptic number.

23520040811 is a deficient number, since it is larger than the sum of its proper divisors (1).

23520040811 is an equidigital number, since it uses as much as digits as its factorization.

23520040811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 23520040811 in words is "twenty-three billion, five hundred twenty million, forty thousand, eight hundred eleven".