7618818816 has 648 divisors, whose sum is σ = 28213086720. Its totient is φ = 1930604544.

The previous prime is 7618818811. The next prime is 7618818841. The reversal of 7618818816 is 6188188167.

7618818816 is a `hidden beast` number, since 7 + 618 + 8 + 1 + 8 + 8 + 16 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7618818811) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 162102505 + ... + 162102551.

Almost surely, 2^7618818816 is an apocalyptic number.

7618818816 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7618818816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14106543360).

7618818816 is an abundant number, since it is smaller than the sum of its proper divisors (20594267904).

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

7618818816 is a wasteful number, since it uses less digits than its factorization.

7618818816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 101 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 54.

The square root of 7618818816 is about 87285.8454504509. The cubic root of 7618818816 is about 1967.7165961126.

The spelling of 7618818816 in words is "seven billion, six hundred eighteen million, eight hundred eighteen thousand, eight hundred sixteen".