20243320399 has 8 divisors (see below), whose sum is σ = 21428375760. Its totient is φ = 19090732416.

The previous prime is 20243320387. The next prime is 20243320411. The reversal of 20243320399 is 99302334202.

It is an interprime number because it is at equal distance from previous prime (20243320387) and next prime (20243320411).

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

It is a cyclic number.

It is not a de Polignac number, because 20243320399 - 2¹¹ = 20243318351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243320099) 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, 8115562 + ... + 8118055.

It is an arithmetic number, because the mean of its divisors is an integer number (2678546970).

Almost surely, 2^20243320399 is an apocalyptic number.

20243320399 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20243320399 is a deficient number, since it is larger than the sum of its proper divisors (1185055361).

20243320399 is a wasteful number, since it uses less digits than its factorization.

20243320399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16233689.

The product of its (nonzero) digits is 69984, while the sum is 37.

The spelling of 20243320399 in words is "twenty billion, two hundred forty-three million, three hundred twenty thousand, three hundred ninety-nine".