2040720221640 has 32 divisors (see below), whose sum is σ = 6122160665280. Its totient is φ = 544192059072.

The previous prime is 2040720221633. The next prime is 2040720221641. The reversal of 2040720221640 is 461220270402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2040720221598 and 2040720221607.

It is not an unprimeable number, because it can be changed into a prime (2040720221641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8503000804 + ... + 8503001043.

It is an arithmetic number, because the mean of its divisors is an integer number (191317520790).

Almost surely, 2^{2040720221640} is an apocalyptic number.

2040720221640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2040720221640 is an abundant number, since it is smaller than the sum of its proper divisors (4081440443640).

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

2040720221640 is a wasteful number, since it uses less digits than its factorization.

2040720221640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17006001861 (or 17006001857 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The spelling of 2040720221640 in words is "two trillion, forty billion, seven hundred twenty million, two hundred twenty-one thousand, six hundred forty".