6644134446 has 32 divisors (see below), whose sum is σ = 14076231840. Its totient is φ = 2083501056.

The previous prime is 6644134423. The next prime is 6644134459. The reversal of 6644134446 is 6444314466.

It is a junction number, because it is equal to n+sod(n) for n = 6644134398 and 6644134407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235210 + ... + 261938.

It is an arithmetic number, because the mean of its divisors is an integer number (439882245).

Almost surely, 2^6644134446 is an apocalyptic number.

6644134446 is an abundant number, since it is smaller than the sum of its proper divisors (7432097394).

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

6644134446 is a wasteful number, since it uses less digits than its factorization.

6644134446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29188.

The product of its digits is 663552, while the sum is 42.

The square root of 6644134446 is about 81511.5601985387. The cubic root of 6644134446 is about 1879.9493012961.

The spelling of 6644134446 in words is "six billion, six hundred forty-four million, one hundred thirty-four thousand, four hundred forty-six".