20035340440 has 32 divisors (see below), whose sum is σ = 46179020160. Its totient is φ = 7818668800.

The previous prime is 20035340417. The next prime is 20035340443. The reversal of 20035340440 is 4404353002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20035340443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6106696 + ... + 6109975.

It is an arithmetic number, because the mean of its divisors is an integer number (1443094380).

Almost surely, 2^20035340440 is an apocalyptic number.

20035340440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20035340440 is an abundant number, since it is smaller than the sum of its proper divisors (26143679720).

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

20035340440 is a wasteful number, since it uses less digits than its factorization.

20035340440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12216723 (or 12216719 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 20035340440 its reverse (4404353002), we get a palindrome (24439693442).

The spelling of 20035340440 in words is "twenty billion, thirty-five million, three hundred forty thousand, four hundred forty".