29121357269 has 2 divisors, whose sum is σ = 29121357270. Its totient is φ = 29121357268.

The previous prime is 29121357259. The next prime is 29121357311. The reversal of 29121357269 is 96275312192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26086449169 + 3034908100 = 161513^2 + 55090^2 .

It is a cyclic number.

It is not a de Polignac number, because 29121357269 - 2⁴ = 29121357253 is a prime.

It is a super-2 number, since 2×29121357269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29121357259) 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, 14560678634 + 14560678635.

It is an arithmetic number, because the mean of its divisors is an integer number (14560678635).

Almost surely, 2^29121357269 is an apocalyptic number.

It is an amenable number.

29121357269 is a deficient number, since it is larger than the sum of its proper divisors (1).

29121357269 is an equidigital number, since it uses as much as digits as its factorization.

29121357269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 47.

The spelling of 29121357269 in words is "twenty-nine billion, one hundred twenty-one million, three hundred fifty-seven thousand, two hundred sixty-nine".