29648468309 has 4 divisors (see below), whose sum is σ = 30337967616. Its totient is φ = 28958969004.

The previous prime is 29648468303. The next prime is 29648468393. The reversal of 29648468309 is 90386484692.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29648468309 - 2²⁰ = 29647419733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29648468303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344749589 + ... + 344749674.

It is an arithmetic number, because the mean of its divisors is an integer number (7584491904).

Almost surely, 2^29648468309 is an apocalyptic number.

It is an amenable number.

29648468309 is a deficient number, since it is larger than the sum of its proper divisors (689499307).

29648468309 is an equidigital number, since it uses as much as digits as its factorization.

29648468309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689499306.

The product of its (nonzero) digits is 17915904, while the sum is 59.

The spelling of 29648468309 in words is "twenty-nine billion, six hundred forty-eight million, four hundred sixty-eight thousand, three hundred nine".