6642093856 has 24 divisors (see below), whose sum is σ = 13086057600. Its totient is φ = 3318650688.

The previous prime is 6642093797. The next prime is 6642093859. The reversal of 6642093856 is 6583902466.

It is not an unprimeable number, because it can be changed into a prime (6642093859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29416 + ... + 118951.

It is an arithmetic number, because the mean of its divisors is an integer number (545252400).

Almost surely, 2^6642093856 is an apocalyptic number.

It is an amenable number.

6642093856 is a deficient number, since it is larger than the sum of its proper divisors (6443963744).

6642093856 is a wasteful number, since it uses less digits than its factorization.

6642093856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149776 (or 149768 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The square root of 6642093856 is about 81499.0420557199. The cubic root of 6642093856 is about 1879.7568208170.

The spelling of 6642093856 in words is "six billion, six hundred forty-two million, ninety-three thousand, eight hundred fifty-six".