2000004003640 has 16 divisors (see below), whose sum is σ = 4500009008280. Its totient is φ = 800001601440.

The previous prime is 2000004003587. The next prime is 2000004003643. The reversal of 2000004003640 is 463004000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000004003643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25000050006 + ... + 25000050085.

Almost surely, 2^{2000004003640} is an apocalyptic number.

2000004003640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000004003640 is an abundant number, since it is smaller than the sum of its proper divisors (2500005004640).

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

2000004003640 is a wasteful number, since it uses less digits than its factorization.

2000004003640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50000100102 (or 50000100098 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 2000004003640 its reverse (463004000002), we get a palindrome (2463008003642).

The spelling of 2000004003640 in words is "two trillion, four million, three thousand, six hundred forty".