6644536293 has 8 divisors (see below), whose sum is σ = 8860587328. Its totient is φ = 4429088064.

The previous prime is 6644536271. The next prime is 6644536337. The reversal of 6644536293 is 3926354466.

6644536293 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6644536293 - 2⁶ = 6644536229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644536253) 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, 124321 + ... + 169542.

It is an arithmetic number, because the mean of its divisors is an integer number (1107573416).

Almost surely, 2^6644536293 is an apocalyptic number.

It is an amenable number.

6644536293 is a deficient number, since it is larger than the sum of its proper divisors (2216051035).

6644536293 is a wasteful number, since it uses less digits than its factorization.

6644536293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301403.

The product of its digits is 2799360, while the sum is 48.

The square root of 6644536293 is about 81514.0251306485. The cubic root of 6644536293 is about 1879.9872012295.

The spelling of 6644536293 in words is "six billion, six hundred forty-four million, five hundred thirty-six thousand, two hundred ninety-three".