13215029999 has 4 divisors (see below), whose sum is σ = 13232487864. Its totient is φ = 13197572136.

The previous prime is 13215029953. The next prime is 13215030047. The reversal of 13215029999 is 99992051231.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13215029999 - 2³² = 8920062703 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 (13215029939) 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, 8727797 + ... + 8729310.

It is an arithmetic number, because the mean of its divisors is an integer number (3308121966).

Almost surely, 2^13215029999 is an apocalyptic number.

13215029999 is a deficient number, since it is larger than the sum of its proper divisors (17457865).

13215029999 is an equidigital number, since it uses as much as digits as its factorization.

13215029999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17457864.

The product of its (nonzero) digits is 393660, while the sum is 50.

The spelling of 13215029999 in words is "thirteen billion, two hundred fifteen million, twenty-nine thousand, nine hundred ninety-nine".