6448442564 has 12 divisors (see below), whose sum is σ = 11775417024. Its totient is φ = 3084037704.

The previous prime is 6448442549. The next prime is 6448442591. The reversal of 6448442564 is 4652448446.

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, 35045792 + ... + 35045975.

It is an arithmetic number, because the mean of its divisors is an integer number (981284752).

Almost surely, 2^6448442564 is an apocalyptic number.

It is an amenable number.

6448442564 is a deficient number, since it is larger than the sum of its proper divisors (5326974460).

6448442564 is a wasteful number, since it uses less digits than its factorization.

6448442564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70091794 (or 70091792 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 47.

The square root of 6448442564 is about 80302.1952626452. The cubic root of 6448442564 is about 1861.3081486271.

The spelling of 6448442564 in words is "six billion, four hundred forty-eight million, four hundred forty-two thousand, five hundred sixty-four".