20045202140340 has 72 divisors (see below), whose sum is σ = 65480993666088. Its totient is φ = 4934203603200.

The previous prime is 20045202140267. The next prime is 20045202140351. The reversal of 20045202140340 is 4304120254002.

20045202140340 is a `hidden beast` number, since 200 + 4 + 52 + 0 + 2 + 1 + 403 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 57972119076 + 19987230021264 = 240774^2 + 4470708^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4283160511 + ... + 4283165190.

Almost surely, 2^{20045202140340} is an apocalyptic number.

20045202140340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20045202140340 is an abundant number, since it is smaller than the sum of its proper divisors (45435791525748).

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

20045202140340 is a wasteful number, since it uses less digits than its factorization.

20045202140340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8566325729 (or 8566325724 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 20045202140340 its reverse (4304120254002), we get a palindrome (24349322394342).

The spelling of 20045202140340 in words is "twenty trillion, forty-five billion, two hundred two million, one hundred forty thousand, three hundred forty".