7318664280 has 288 divisors, whose sum is σ = 25082740800. Its totient is φ = 1921480704.

The previous prime is 7318664261. The next prime is 7318664299. The reversal of 7318664280 is 824668137.

It is an interprime number because it is at equal distance from previous prime (7318664261) and next prime (7318664299).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 20732584 + ... + 20732936.

It is an arithmetic number, because the mean of its divisors is an integer number (87092850).

Almost surely, 2^7318664280 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 7318664280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12541370400).

7318664280 is an abundant number, since it is smaller than the sum of its proper divisors (17764076520).

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

7318664280 is an equidigital number, since it uses as much as digits as its factorization.

7318664280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 7318664280 is about 85549.1921645085. The cubic root of 7318664280 is about 1941.5292685557.

The spelling of 7318664280 in words is "seven billion, three hundred eighteen million, six hundred sixty-four thousand, two hundred eighty".