2646044440646 has 16 divisors (see below), whose sum is σ = 4004353819968. Its totient is φ = 1311310425600.

The previous prime is 2646044440639. The next prime is 2646044440661. The reversal of 2646044440646 is 6460444406462.

It is a junction number, because it is equal to n+sod(n) for n = 2646044440594 and 2646044440603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12543065 + ... + 12752276.

It is an arithmetic number, because the mean of its divisors is an integer number (250272113748).

Almost surely, 2^{2646044440646} is an apocalyptic number.

2646044440646 is a deficient number, since it is larger than the sum of its proper divisors (1358309379322).

2646044440646 is a wasteful number, since it uses less digits than its factorization.

2646044440646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25295807.

The product of its (nonzero) digits is 10616832, while the sum is 50.

The spelling of 2646044440646 in words is "two trillion, six hundred forty-six billion, forty-four million, four hundred forty thousand, six hundred forty-six".