8533721923 has 2 divisors, whose sum is σ = 8533721924. Its totient is φ = 8533721922.

The previous prime is 8533721893. The next prime is 8533721927. The reversal of 8533721923 is 3291273358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8533721923 - 2¹⁷ = 8533590851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8533721923.

It is not a weakly prime, because it can be changed into another prime (8533721927) 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 as a sum of consecutive naturals, namely, 4266860961 + 4266860962.

It is an arithmetic number, because the mean of its divisors is an integer number (4266860962).

Almost surely, 2^8533721923 is an apocalyptic number.

8533721923 is a deficient number, since it is larger than the sum of its proper divisors (1).

8533721923 is an equidigital number, since it uses as much as digits as its factorization.

8533721923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 8533721923 is about 92378.1463496643. The cubic root of 8533721923 is about 2043.5228379877.

The spelling of 8533721923 in words is "eight billion, five hundred thirty-three million, seven hundred twenty-one thousand, nine hundred twenty-three".