7218053544 has 96 divisors (see below), whose sum is σ = 19590076800. Its totient is φ = 2215249920.

The previous prime is 7218053539. The next prime is 7218053561. The reversal of 7218053544 is 4453508127.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 1746072 + ... + 1750200.

It is an arithmetic number, because the mean of its divisors is an integer number (204063300).

Almost surely, 2^7218053544 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 7218053544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9795038400).

7218053544 is an abundant number, since it is smaller than the sum of its proper divisors (12372023256).

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

7218053544 is a wasteful number, since it uses less digits than its factorization.

7218053544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4595 (or 4578 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 7218053544 is about 84959.1286678483. The cubic root of 7218053544 is about 1932.5913577962.

The spelling of 7218053544 in words is "seven billion, two hundred eighteen million, fifty-three thousand, five hundred forty-four".