118320221568 has 64 divisors (see below), whose sum is σ = 314928688320. Its totient is φ = 39359685120.

The previous prime is 118320221563. The next prime is 118320221573. The reversal of 118320221568 is 865122023811.

It is an interprime number because it is at equal distance from previous prime (118320221563) and next prime (118320221573).

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×118320221568³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118320221563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125230 + ... + 502317.

It is an arithmetic number, because the mean of its divisors is an integer number (4920760755).

Almost surely, 2^118320221568 is an apocalyptic number.

It is an amenable number.

118320221568 is an abundant number, since it is smaller than the sum of its proper divisors (196608466752).

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

118320221568 is an equidigital number, since it uses as much as digits as its factorization.

118320221568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628055 (or 628043 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 118320221568 in words is "one hundred eighteen billion, three hundred twenty million, two hundred twenty-one thousand, five hundred sixty-eight".