7818053544 has 96 divisors (see below), whose sum is σ = 24230344320. Its totient is φ = 2230812288.

The previous prime is 7818053531. The next prime is 7818053549. The reversal of 7818053544 is 4453508187.

7818053544 is a `hidden beast` number, since 78 + 1 + 8 + 0 + 535 + 44 = 666.

It is a super-2 number, since 2×7818053544² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7818053544.

It is not an unprimeable number, because it can be changed into a prime (7818053549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391957 + ... + 411419.

It is an arithmetic number, because the mean of its divisors is an integer number (252399420).

Almost surely, 2^7818053544 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 7818053544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12115172160).

7818053544 is an abundant number, since it is smaller than the sum of its proper divisors (16412290776).

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

7818053544 is a wasteful number, since it uses less digits than its factorization.

7818053544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20279 (or 20272 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 7818053544 is about 88419.7576563067. The cubic root of 7818053544 is about 1984.7213743480.

The spelling of 7818053544 in words is "seven billion, eight hundred eighteen million, fifty-three thousand, five hundred forty-four".