2113642211640 has 64 divisors (see below), whose sum is σ = 6353097507360. Its totient is φ = 562556067840.

The previous prime is 2113642211587. The next prime is 2113642211663. The reversal of 2113642211640 is 461122463112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16841209 + ... + 16966248.

Almost surely, 2^{2113642211640} is an apocalyptic number.

2113642211640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113642211640 is an abundant number, since it is smaller than the sum of its proper divisors (4239455295720).

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

2113642211640 is a wasteful number, since it uses less digits than its factorization.

2113642211640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33807992 (or 33807988 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

Adding to 2113642211640 its reverse (461122463112), we get a palindrome (2574764674752).

The spelling of 2113642211640 in words is "two trillion, one hundred thirteen billion, six hundred forty-two million, two hundred eleven thousand, six hundred forty".