20340340344 has 48 divisors (see below), whose sum is σ = 55100050200. Its totient is φ = 6778682304.

The previous prime is 20340340331. The next prime is 20340340367. The reversal of 20340340344 is 44304304302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 346387 + ... + 400829.

Almost surely, 2^20340340344 is an apocalyptic number.

20340340344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20340340344 is an abundant number, since it is smaller than the sum of its proper divisors (34759709856).

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

20340340344 is a wasteful number, since it uses less digits than its factorization.

20340340344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59644 (or 59637 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20340340344 its reverse (44304304302), we get a palindrome (64644644646).

The spelling of 20340340344 in words is "twenty billion, three hundred forty million, three hundred forty thousand, three hundred forty-four".