20140355340 has 216 divisors, whose sum is σ = 71734218192. Its totient is φ = 4560272640.

The previous prime is 20140355327. The next prime is 20140355369. The reversal of 20140355340 is 4355304102.

20140355340 is a `hidden beast` number, since 201 + 403 + 5 + 53 + 4 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 933070 + ... + 954410.

It is an arithmetic number, because the mean of its divisors is an integer number (332102862).

Almost surely, 2^20140355340 is an apocalyptic number.

20140355340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20140355340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35867109096).

20140355340 is an abundant number, since it is smaller than the sum of its proper divisors (51593862852).

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

20140355340 is a wasteful number, since it uses less digits than its factorization.

20140355340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21477 (or 21465 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 20140355340 its reverse (4355304102), we get a palindrome (24495659442).

The spelling of 20140355340 in words is "twenty billion, one hundred forty million, three hundred fifty-five thousand, three hundred forty".