2040660406644 has 48 divisors (see below), whose sum is σ = 4789370707968. Its totient is φ = 676255966848.

The previous prime is 2040660406619. The next prime is 2040660406657. The reversal of 2040660406644 is 4466040660402.

It is a junction number, because it is equal to n+sod(n) for n = 2040660406596 and 2040660406605.

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, 699789 + ... + 2137995.

It is an arithmetic number, because the mean of its divisors is an integer number (99778556416).

Almost surely, 2^{2040660406644} is an apocalyptic number.

It is an amenable number.

2040660406644 is an abundant number, since it is smaller than the sum of its proper divisors (2748710301324).

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

2040660406644 is a wasteful number, since it uses less digits than its factorization.

2040660406644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438904 (or 1438902 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 2040660406644 in words is "two trillion, forty billion, six hundred sixty million, four hundred six thousand, six hundred forty-four".