29997985542449 has 2 divisors, whose sum is σ = 29997985542450. Its totient is φ = 29997985542448.

The previous prime is 29997985542377. The next prime is 29997985542463. The reversal of 29997985542449 is 94424558979992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29766462898225 + 231522644224 = 5455865^2 + 481168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29997985542449 is a prime.

It is not a weakly prime, because it can be changed into another prime (29997985542649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998992771224 + 14998992771225.

It is an arithmetic number, because the mean of its divisors is an integer number (14998992771225).

Almost surely, 2^{29997985542449} is an apocalyptic number.

It is an amenable number.

29997985542449 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997985542449 is an equidigital number, since it uses as much as digits as its factorization.

29997985542449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21163161600, while the sum is 86.

The spelling of 29997985542449 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred eighty-five million, five hundred forty-two thousand, four hundred forty-nine".