29745287329 has 4 divisors (see below), whose sum is σ = 29820212884. Its totient is φ = 29670361776.

The previous prime is 29745287309. The next prime is 29745287357. The reversal of 29745287329 is 92378254792.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9836077329 + 19909210000 = 99177^2 + 141100^2 .

It is a cyclic number.

It is not a de Polignac number, because 29745287329 - 2⁹ = 29745286817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29745287309) 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 in 3 ways as a sum of consecutive naturals, for example, 37462182 + ... + 37462975.

It is an arithmetic number, because the mean of its divisors is an integer number (7455053221).

Almost surely, 2^29745287329 is an apocalyptic number.

It is an amenable number.

29745287329 is a deficient number, since it is larger than the sum of its proper divisors (74925555).

29745287329 is an equidigital number, since it uses as much as digits as its factorization.

29745287329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74925554.

The product of its digits is 15240960, while the sum is 58.

The spelling of 29745287329 in words is "twenty-nine billion, seven hundred forty-five million, two hundred eighty-seven thousand, three hundred twenty-nine".