24168493421 has 2 divisors, whose sum is σ = 24168493422. Its totient is φ = 24168493420.

The previous prime is 24168493417. The next prime is 24168493477. The reversal of 24168493421 is 12439486142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24026550025 + 141943396 = 155005^2 + 11914^2 .

It is a cyclic number.

It is not a de Polignac number, because 24168493421 - 2² = 24168493417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24168493021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12084246710 + 12084246711.

It is an arithmetic number, because the mean of its divisors is an integer number (12084246711).

Almost surely, 2^24168493421 is an apocalyptic number.

It is an amenable number.

24168493421 is a deficient number, since it is larger than the sum of its proper divisors (1).

24168493421 is an equidigital number, since it uses as much as digits as its factorization.

24168493421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 44.

The spelling of 24168493421 in words is "twenty-four billion, one hundred sixty-eight million, four hundred ninety-three thousand, four hundred twenty-one".