29956897129 has 2 divisors, whose sum is σ = 29956897130. Its totient is φ = 29956897128.

The previous prime is 29956897109. The next prime is 29956897169. The reversal of 29956897129 is 92179865992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29841871504 + 115025625 = 172748^2 + 10725^2 .

It is a cyclic number.

It is not a de Polignac number, because 29956897129 - 2¹³ = 29956888937 is a prime.

It is not a weakly prime, because it can be changed into another prime (29956897109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14978448564 + 14978448565.

It is an arithmetic number, because the mean of its divisors is an integer number (14978448565).

Almost surely, 2^29956897129 is an apocalyptic number.

It is an amenable number.

29956897129 is a deficient number, since it is larger than the sum of its proper divisors (1).

29956897129 is an equidigital number, since it uses as much as digits as its factorization.

29956897129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44089920, while the sum is 67.

The spelling of 29956897129 in words is "twenty-nine billion, nine hundred fifty-six million, eight hundred ninety-seven thousand, one hundred twenty-nine".