7275855956544 has 504 divisors, whose sum is σ = 25405312428288. Its totient is φ = 1981306736640.

The previous prime is 7275855956507. The next prime is 7275855956549. The reversal of 7275855956544 is 4456595585727.

It is a happy number.

7275855956544 is a `hidden beast` number, since 7 + 2 + 7 + 5 + 8 + 5 + 59 + 565 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (7275855956549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 182391769 + ... + 182431655.

Almost surely, 2^{7275855956544} 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 7275855956544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12702656214144).

7275855956544 is an abundant number, since it is smaller than the sum of its proper divisors (18129456471744).

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

7275855956544 is a wasteful number, since it uses less digits than its factorization.

7275855956544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40223 (or 40203 counting only the distinct ones).

The product of its digits is 2116800000, while the sum is 72.

The spelling of 7275855956544 in words is "seven trillion, two hundred seventy-five billion, eight hundred fifty-five million, nine hundred fifty-six thousand, five hundred forty-four".