6451043444 has 12 divisors (see below), whose sum is σ = 11351699268. Its totient is φ = 3207700800.

The previous prime is 6451043437. The next prime is 6451043483. The reversal of 6451043444 is 4443401546.

It can be written as a sum of positive squares in 2 ways, for example, as 28944400 + 6422099044 = 5380^2 + 80138^2 .

It is a super-2 number, since 2×6451043444² = 83231923032750762272, which contains 22 as substring.

It is a congruent number.

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, 4454417 + ... + 4455864.

It is an arithmetic number, because the mean of its divisors is an integer number (945974939).

Almost surely, 2^6451043444 is an apocalyptic number.

It is an amenable number.

6451043444 is a deficient number, since it is larger than the sum of its proper divisors (4900655824).

6451043444 is a wasteful number, since it uses less digits than its factorization.

6451043444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8910466 (or 8910464 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

The square root of 6451043444 is about 80318.3879569305. The cubic root of 6451043444 is about 1861.5583583163.

The spelling of 6451043444 in words is "six billion, four hundred fifty-one million, forty-three thousand, four hundred forty-four".