6441481497456 has 120 divisors (see below), whose sum is σ = 18471510081024. Its totient is φ = 2094266603520.

The previous prime is 6441481497401. The next prime is 6441481497469. The reversal of 6441481497456 is 6547941841446.

6441481497456 is a `hidden beast` number, since 6 + 4 + 4 + 14 + 81 + 4 + 97 + 456 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6441481497393 and 6441481497402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23818065 + ... + 24086991.

Almost surely, 2^{6441481497456} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6441481497456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9235755040512).

6441481497456 is an abundant number, since it is smaller than the sum of its proper divisors (12030028583568).

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

6441481497456 is a wasteful number, since it uses less digits than its factorization.

6441481497456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273039 (or 273030 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 63.

The spelling of 6441481497456 in words is "six trillion, four hundred forty-one billion, four hundred eighty-one million, four hundred ninety-seven thousand, four hundred fifty-six".