6442124644 has 24 divisors (see below), whose sum is σ = 11387930400. Its totient is φ = 3188552640.

The previous prime is 6442124639. The next prime is 6442124677. The reversal of 6442124644 is 4464212446.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199287 + ... + 229345.

It is an arithmetic number, because the mean of its divisors is an integer number (474497100).

Almost surely, 2^6442124644 is an apocalyptic number.

It is an amenable number.

6442124644 is a deficient number, since it is larger than the sum of its proper divisors (4945805756).

6442124644 is a wasteful number, since it uses less digits than its factorization.

6442124644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30603 (or 30601 counting only the distinct ones).

The product of its digits is 147456, while the sum is 37.

The square root of 6442124644 is about 80262.8472208655. The cubic root of 6442124644 is about 1860.7000721560.

The spelling of 6442124644 in words is "six billion, four hundred forty-two million, one hundred twenty-four thousand, six hundred forty-four".