29573743021 has 2 divisors, whose sum is σ = 29573743022. Its totient is φ = 29573743020.

The previous prime is 29573743019. The next prime is 29573743049. The reversal of 29573743021 is 12034737592.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25244760996 + 4328982025 = 158886^2 + 65795^2 .

It is a cyclic number.

It is not a de Polignac number, because 29573743021 - 2¹ = 29573743019 is a prime.

Together with 29573743019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29573713021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14786871510 + 14786871511.

It is an arithmetic number, because the mean of its divisors is an integer number (14786871511).

Almost surely, 2^29573743021 is an apocalyptic number.

It is an amenable number.

29573743021 is a deficient number, since it is larger than the sum of its proper divisors (1).

29573743021 is an equidigital number, since it uses as much as digits as its factorization.

29573743021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 29573743021 in words is "twenty-nine billion, five hundred seventy-three million, seven hundred forty-three thousand, twenty-one".