20350223340 has 24 divisors (see below), whose sum is σ = 56980625520. Its totient is φ = 5426726208.

The previous prime is 20350223339. The next prime is 20350223407. The reversal of 20350223340 is 4332205302.

It is a self number, because there is not a number n which added to its sum of digits gives 20350223340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169585135 + ... + 169585254.

It is an arithmetic number, because the mean of its divisors is an integer number (2374192730).

Almost surely, 2^20350223340 is an apocalyptic number.

20350223340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20350223340 is an abundant number, since it is smaller than the sum of its proper divisors (36630402180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20350223340 is a wasteful number, since it uses less digits than its factorization.

20350223340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339170401 (or 339170399 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 24.

Adding to 20350223340 its reverse (4332205302), we get a palindrome (24682428642).

The spelling of 20350223340 in words is "twenty billion, three hundred fifty million, two hundred twenty-three thousand, three hundred forty".