6545260620444 has 288 divisors, whose sum is σ = 20267609617920. Its totient is φ = 1624946738688.

The previous prime is 6545260620443. The next prime is 6545260620497. The reversal of 6545260620444 is 4440260625456.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6545260620393 and 6545260620402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545260620443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22658529 + ... + 22945575.

Almost surely, 2^{6545260620444} 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 6545260620444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10133804808960).

6545260620444 is an abundant number, since it is smaller than the sum of its proper divisors (13722348997476).

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

6545260620444 is a wasteful number, since it uses less digits than its factorization.

6545260620444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287257 (or 287248 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 48.

The spelling of 6545260620444 in words is "six trillion, five hundred forty-five billion, two hundred sixty million, six hundred twenty thousand, four hundred forty-four".