29773149281 has 2 divisors, whose sum is σ = 29773149282. Its totient is φ = 29773149280.

The previous prime is 29773149271. The next prime is 29773149299. The reversal of 29773149281 is 18294137792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27073411600 + 2699737681 = 164540^2 + 51959^2 .

It is a cyclic number.

It is not a de Polignac number, because 29773149281 - 2²² = 29768954977 is a prime.

It is a super-2 number, since 2×29773149281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29773149271) 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, 14886574640 + 14886574641.

It is an arithmetic number, because the mean of its divisors is an integer number (14886574641).

Almost surely, 2^29773149281 is an apocalyptic number.

It is an amenable number.

29773149281 is a deficient number, since it is larger than the sum of its proper divisors (1).

29773149281 is an equidigital number, since it uses as much as digits as its factorization.

29773149281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 53.

The spelling of 29773149281 in words is "twenty-nine billion, seven hundred seventy-three million, one hundred forty-nine thousand, two hundred eighty-one".