6544403620662 has 8 divisors (see below), whose sum is σ = 13088807241336. Its totient is φ = 2181467873552.

The previous prime is 6544403620649. The next prime is 6544403620673. The reversal of 6544403620662 is 2660263044456.

It is a sphenic number, since it is the product of 3 distinct primes.

6544403620662 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545366968383 + ... + 545366968394.

It is an arithmetic number, because the mean of its divisors is an integer number (1636100905167).

Almost surely, 2^{6544403620662} is an apocalyptic number.

6544403620662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6544403620662 is a wasteful number, since it uses less digits than its factorization.

6544403620662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090733936782.

The product of its (nonzero) digits is 4976640, while the sum is 48.

The spelling of 6544403620662 in words is "six trillion, five hundred forty-four billion, four hundred three million, six hundred twenty thousand, six hundred sixty-two".