6544251306404 has 12 divisors (see below), whose sum is σ = 13088502612864. Its totient is φ = 2804679131304.

The previous prime is 6544251306403. The next prime is 6544251306409. The reversal of 6544251306404 is 4046031524456.

6544251306404 is an admirable number.

It is a super-2 number, since 2×6544251306404² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6544251306403) 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, 116861630444 + ... + 116861630499.

It is an arithmetic number, because the mean of its divisors is an integer number (1090708551072).

Almost surely, 2^{6544251306404} is an apocalyptic number.

It is an amenable number.

6544251306404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6544251306404 is a wasteful number, since it uses less digits than its factorization.

6544251306404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233723260954 (or 233723260952 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 6544251306404 in words is "six trillion, five hundred forty-four billion, two hundred fifty-one million, three hundred six thousand, four hundred four".