23823640553 has 2 divisors, whose sum is σ = 23823640554. Its totient is φ = 23823640552.

The previous prime is 23823640537. The next prime is 23823640571. The reversal of 23823640553 is 35504632832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18399023449 + 5424617104 = 135643^2 + 73652^2 .

It is a cyclic number.

It is not a de Polignac number, because 23823640553 - 2⁴ = 23823640537 is a prime.

It is a super-2 number, since 2×23823640553² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23823640553.

It is not a weakly prime, because it can be changed into another prime (23823640453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11911820276 + 11911820277.

It is an arithmetic number, because the mean of its divisors is an integer number (11911820277).

Almost surely, 2^23823640553 is an apocalyptic number.

It is an amenable number.

23823640553 is a deficient number, since it is larger than the sum of its proper divisors (1).

23823640553 is an equidigital number, since it uses as much as digits as its factorization.

23823640553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 23823640553 in words is "twenty-three billion, eight hundred twenty-three million, six hundred forty thousand, five hundred fifty-three".