20233454149 has 2 divisors, whose sum is σ = 20233454150. Its totient is φ = 20233454148.

The previous prime is 20233454089. The next prime is 20233454161. The reversal of 20233454149 is 94145433202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16664228100 + 3569226049 = 129090^2 + 59743^2 .

It is a cyclic number.

It is not a de Polignac number, because 20233454149 - 2⁹ = 20233453637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20233457149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116727074 + 10116727075.

It is an arithmetic number, because the mean of its divisors is an integer number (10116727075).

Almost surely, 2^20233454149 is an apocalyptic number.

It is an amenable number.

20233454149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20233454149 is an equidigital number, since it uses as much as digits as its factorization.

20233454149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 20233454149 in words is "twenty billion, two hundred thirty-three million, four hundred fifty-four thousand, one hundred forty-nine".