29149553809 has 2 divisors, whose sum is σ = 29149553810. Its totient is φ = 29149553808.

The previous prime is 29149553777. The next prime is 29149553857. The reversal of 29149553809 is 90835594192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28594810000 + 554743809 = 169100^2 + 23553^2 .

It is a cyclic number.

It is not a de Polignac number, because 29149553809 - 2⁵ = 29149553777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29149553809.

It is not a weakly prime, because it can be changed into another prime (29149550809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14574776904 + 14574776905.

It is an arithmetic number, because the mean of its divisors is an integer number (14574776905).

Almost surely, 2^29149553809 is an apocalyptic number.

It is an amenable number.

29149553809 is a deficient number, since it is larger than the sum of its proper divisors (1).

29149553809 is an equidigital number, since it uses as much as digits as its factorization.

29149553809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 29149553809 in words is "twenty-nine billion, one hundred forty-nine million, five hundred fifty-three thousand, eight hundred nine".