13369950721 has 4 divisors (see below), whose sum is σ = 13382672944. Its totient is φ = 13357228500.

The previous prime is 13369950709. The next prime is 13369950733. The reversal of 13369950721 is 12705996331.

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 an interprime number because it is at equal distance from previous prime (13369950709) and next prime (13369950733).

It is a cyclic number.

It is not a de Polignac number, because 13369950721 - 2⁵ = 13369950689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13369950221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6359535 + ... + 6361636.

It is an arithmetic number, because the mean of its divisors is an integer number (3345668236).

Almost surely, 2^13369950721 is an apocalyptic number.

It is an amenable number.

13369950721 is a deficient number, since it is larger than the sum of its proper divisors (12722223).

13369950721 is a wasteful number, since it uses less digits than its factorization.

13369950721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12722222.

The product of its (nonzero) digits is 306180, while the sum is 46.

The spelling of 13369950721 in words is "thirteen billion, three hundred sixty-nine million, nine hundred fifty thousand, seven hundred twenty-one".