6544774456 has 16 divisors (see below), whose sum is σ = 13387038840. Its totient is φ = 2974897440.

The previous prime is 6544774421. The next prime is 6544774459.

6544774456 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6544774459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37186131 + ... + 37186306.

Almost surely, 2^6544774456 is an apocalyptic number.

It is an amenable number.

6544774456 is an abundant number, since it is smaller than the sum of its proper divisors (6842264384).

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

6544774456 is a wasteful number, since it uses less digits than its factorization.

6544774456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74372454 (or 74372450 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 52.

The square root of 6544774456 is about 80899.7803210862. The cubic root of 6544774456 is about 1870.5309344886.

The spelling of 6544774456 in words is "six billion, five hundred forty-four million, seven hundred seventy-four thousand, four hundred fifty-six".