20344333401 has 12 divisors (see below), whose sum is σ = 33584296512. Its totient is φ = 11625333336.

The previous prime is 20344333363. The next prime is 20344333421. The reversal of 20344333401 is 10433344302.

It is not a de Polignac number, because 20344333401 - 2¹⁸ = 20344071257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20344333421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161462901 + ... + 161463026.

It is an arithmetic number, because the mean of its divisors is an integer number (2798691376).

Almost surely, 2^20344333401 is an apocalyptic number.

20344333401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20344333401 is a deficient number, since it is larger than the sum of its proper divisors (13239963111).

20344333401 is a wasteful number, since it uses less digits than its factorization.

20344333401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322925940 (or 322925937 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20344333401 its reverse (10433344302), we get a palindrome (30777677703).

The spelling of 20344333401 in words is "twenty billion, three hundred forty-four million, three hundred thirty-three thousand, four hundred one".