20349669599 has 8 divisors (see below), whose sum is σ = 23303376000. Its totient is φ = 17407615896.

The previous prime is 20349669569. The next prime is 20349669611. The reversal of 20349669599 is 99596694302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20349669599 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 (20349669569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2909429 + ... + 2916414.

It is an arithmetic number, because the mean of its divisors is an integer number (2912922000).

Almost surely, 2^20349669599 is an apocalyptic number.

20349669599 is a deficient number, since it is larger than the sum of its proper divisors (2953706401).

20349669599 is an equidigital number, since it uses as much as digits as its factorization.

20349669599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5826349.

The product of its (nonzero) digits is 28343520, while the sum is 62.

The spelling of 20349669599 in words is "twenty billion, three hundred forty-nine million, six hundred sixty-nine thousand, five hundred ninety-nine".