48316921421 has 2 divisors, whose sum is σ = 48316921422. Its totient is φ = 48316921420.

The previous prime is 48316921379. The next prime is 48316921451. The reversal of 48316921421 is 12412961384.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30481318921 + 17835602500 = 174589^2 + 133550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48316921421 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48316921451) 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, 24158460710 + 24158460711.

It is an arithmetic number, because the mean of its divisors is an integer number (24158460711).

Almost surely, 2^48316921421 is an apocalyptic number.

It is an amenable number.

48316921421 is a deficient number, since it is larger than the sum of its proper divisors (1).

48316921421 is an equidigital number, since it uses as much as digits as its factorization.

48316921421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 41.

The spelling of 48316921421 in words is "forty-eight billion, three hundred sixteen million, nine hundred twenty-one thousand, four hundred twenty-one".